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Finding the Fourth Proportional to 539.17, 743.57 and 456.19

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Solution

The fourth proportional to 539.17, 743.57 and 456.19 is: 629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.17 : 743.57 = 456.19 : x
  2. Step 2: Convert to fraction form
    539.17/743.57 = 456.19/x
  3. Step 3: Cross multiply
    539.17x = 743.57 × 456.19
  4. Step 4: Simplify right side
    539.17x = 339,209.20
  5. Step 5: Solve for x
    x = 339,209.20/539.17
  6. Step 6: Final answer
    x = 629.13

Related Problems

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Double scale
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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.