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Finding the Fourth Proportional to 237.76, 356.65 and 100.79

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Solution

The fourth proportional to 237.76, 356.65 and 100.79 is: 151.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.76 : 356.65 = 100.79 : x
  2. Step 2: Convert to fraction form
    237.76/356.65 = 100.79/x
  3. Step 3: Cross multiply
    237.76x = 356.65 × 100.79
  4. Step 4: Simplify right side
    237.76x = 35,944.97
  5. Step 5: Solve for x
    x = 35,944.97/237.76
  6. Step 6: Final answer
    x = 151.18

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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.