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Finding the Fourth Proportional to 517.76, 714.60 and 343.10

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Solution

The fourth proportional to 517.76, 714.60 and 343.10 is: 473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.76 : 714.60 = 343.10 : x
  2. Step 2: Convert to fraction form
    517.76/714.60 = 343.10/x
  3. Step 3: Cross multiply
    517.76x = 714.60 × 343.10
  4. Step 4: Simplify right side
    517.76x = 245,179.26
  5. Step 5: Solve for x
    x = 245,179.26/517.76
  6. Step 6: Final answer
    x = 473.54

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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.