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Finding the Fourth Proportional to 887.12, 1,330.50 and 237.86

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Solution

The fourth proportional to 887.12, 1,330.50 and 237.86 is: 356.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.12 : 1,330.50 = 237.86 : x
  2. Step 2: Convert to fraction form
    887.12/1,330.50 = 237.86/x
  3. Step 3: Cross multiply
    887.12x = 1,330.50 × 237.86
  4. Step 4: Simplify right side
    887.12x = 316,472.73
  5. Step 5: Solve for x
    x = 316,472.73/887.12
  6. Step 6: Final answer
    x = 356.74

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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.