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Finding the Fourth Proportional to 1,074.76, 1,483.14 and 632.69

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Solution

The fourth proportional to 1,074.76, 1,483.14 and 632.69 is: 873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.76 : 1,483.14 = 632.69 : x
  2. Step 2: Convert to fraction form
    1,074.76/1,483.14 = 632.69/x
  3. Step 3: Cross multiply
    1,074.76x = 1,483.14 × 632.69
  4. Step 4: Simplify right side
    1,074.76x = 938,367.85
  5. Step 5: Solve for x
    x = 938,367.85/1,074.76
  6. Step 6: Final answer
    x = 873.10

Related Problems

Find fourth proportional to 537.38, 741.57 and 316.35
Half scale
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Double scale
Find fourth proportional to 1,075.76, 1,484.52 and 633.69
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.