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Finding the Fourth Proportional to 887.34, 1,331.12 and 238.13

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Solution

The fourth proportional to 887.34, 1,331.12 and 238.13 is: 357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.34 : 1,331.12 = 238.13 : x
  2. Step 2: Convert to fraction form
    887.34/1,331.12 = 238.13/x
  3. Step 3: Cross multiply
    887.34x = 1,331.12 × 238.13
  4. Step 4: Simplify right side
    887.34x = 316,979.61
  5. Step 5: Solve for x
    x = 316,979.61/887.34
  6. Step 6: Final answer
    x = 357.22

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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.