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Finding the Fourth Proportional to 357.38, 491.61 and 337.22

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Solution

The fourth proportional to 357.38, 491.61 and 337.22 is: 463.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.38 : 491.61 = 337.22 : x
  2. Step 2: Convert to fraction form
    357.38/491.61 = 337.22/x
  3. Step 3: Cross multiply
    357.38x = 491.61 × 337.22
  4. Step 4: Simplify right side
    357.38x = 165,780.72
  5. Step 5: Solve for x
    x = 165,780.72/357.38
  6. Step 6: Final answer
    x = 463.88

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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.