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Finding the Fourth Proportional to 157.38, 237.45 and 156.17

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Solution

The fourth proportional to 157.38, 237.45 and 156.17 is: 235.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.38 : 237.45 = 156.17 : x
  2. Step 2: Convert to fraction form
    157.38/237.45 = 156.17/x
  3. Step 3: Cross multiply
    157.38x = 237.45 × 156.17
  4. Step 4: Simplify right side
    157.38x = 37,081.38
  5. Step 5: Solve for x
    x = 37,081.38/157.38
  6. Step 6: Final answer
    x = 235.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.