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Finding the Fourth Proportional to 157.67, 237.20 and 149.47

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Solution

The fourth proportional to 157.67, 237.20 and 149.47 is: 224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.67 : 237.20 = 149.47 : x
  2. Step 2: Convert to fraction form
    157.67/237.20 = 149.47/x
  3. Step 3: Cross multiply
    157.67x = 237.20 × 149.47
  4. Step 4: Simplify right side
    157.67x = 35,452.94
  5. Step 5: Solve for x
    x = 35,452.94/157.67
  6. Step 6: Final answer
    x = 224.85

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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.