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Finding the Fourth Proportional to 1,130.07, 1,559.51 and 632.76

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Solution

The fourth proportional to 1,130.07, 1,559.51 and 632.76 is: 873.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.07 : 1,559.51 = 632.76 : x
  2. Step 2: Convert to fraction form
    1,130.07/1,559.51 = 632.76/x
  3. Step 3: Cross multiply
    1,130.07x = 1,559.51 × 632.76
  4. Step 4: Simplify right side
    1,130.07x = 986,795.55
  5. Step 5: Solve for x
    x = 986,795.55/1,130.07
  6. Step 6: Final answer
    x = 873.22

Related Problems

Find fourth proportional to 565.04, 779.76 and 316.38
Half scale
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Double scale
Find fourth proportional to 1,131.07, 1,560.89 and 633.76
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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.