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Finding the Fourth Proportional to 517.93, 714.15 and 351.84

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Solution

The fourth proportional to 517.93, 714.15 and 351.84 is: 485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.93 : 714.15 = 351.84 : x
  2. Step 2: Convert to fraction form
    517.93/714.15 = 351.84/x
  3. Step 3: Cross multiply
    517.93x = 714.15 × 351.84
  4. Step 4: Simplify right side
    517.93x = 251,269.21
  5. Step 5: Solve for x
    x = 251,269.21/517.93
  6. Step 6: Final answer
    x = 485.14

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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.