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Finding the Fourth Proportional to 356.38, 534.51 and 151.15

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Solution

The fourth proportional to 356.38, 534.51 and 151.15 is: 226.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.38 : 534.51 = 151.15 : x
  2. Step 2: Convert to fraction form
    356.38/534.51 = 151.15/x
  3. Step 3: Cross multiply
    356.38x = 534.51 × 151.15
  4. Step 4: Simplify right side
    356.38x = 80,791.19
  5. Step 5: Solve for x
    x = 80,791.19/356.38
  6. Step 6: Final answer
    x = 226.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.