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Finding the Fourth Proportional to 237.17, 355.55 and 100.31

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Solution

The fourth proportional to 237.17, 355.55 and 100.31 is: 150.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.17 : 355.55 = 100.31 : x
  2. Step 2: Convert to fraction form
    237.17/355.55 = 100.31/x
  3. Step 3: Cross multiply
    237.17x = 355.55 × 100.31
  4. Step 4: Simplify right side
    237.17x = 35,665.22
  5. Step 5: Solve for x
    x = 35,665.22/237.17
  6. Step 6: Final answer
    x = 150.38

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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.