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Finding the Fourth Proportional to 914.98, 1,262.53 and 583.69

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Solution

The fourth proportional to 914.98, 1,262.53 and 583.69 is: 805.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.98 : 1,262.53 = 583.69 : x
  2. Step 2: Convert to fraction form
    914.98/1,262.53 = 583.69/x
  3. Step 3: Cross multiply
    914.98x = 1,262.53 × 583.69
  4. Step 4: Simplify right side
    914.98x = 736,926.14
  5. Step 5: Solve for x
    x = 736,926.14/914.98
  6. Step 6: Final answer
    x = 805.40

Related Problems

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Half scale
Find fourth proportional to 1,829.96, 2,525.06 and 1,167.38
Double scale
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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.