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Finding the Fourth Proportional to 517.68, 714.33 and 331.25

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Solution

The fourth proportional to 517.68, 714.33 and 331.25 is: 457.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.68 : 714.33 = 331.25 : x
  2. Step 2: Convert to fraction form
    517.68/714.33 = 331.25/x
  3. Step 3: Cross multiply
    517.68x = 714.33 × 331.25
  4. Step 4: Simplify right side
    517.68x = 236,618.24
  5. Step 5: Solve for x
    x = 236,618.24/517.68
  6. Step 6: Final answer
    x = 457.07

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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.