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Finding the Fourth Proportional to 517.28, 712.80 and 434.24

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Solution

The fourth proportional to 517.28, 712.80 and 434.24 is: 598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.28 : 712.80 = 434.24 : x
  2. Step 2: Convert to fraction form
    517.28/712.80 = 434.24/x
  3. Step 3: Cross multiply
    517.28x = 712.80 × 434.24
  4. Step 4: Simplify right side
    517.28x = 309,526.27
  5. Step 5: Solve for x
    x = 309,526.27/517.28
  6. Step 6: Final answer
    x = 598.37

Related Problems

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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.