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Finding the Fourth Proportional to 962.11, 1,327.09 and 663.37

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Solution

The fourth proportional to 962.11, 1,327.09 and 663.37 is: 915.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.11 : 1,327.09 = 663.37 : x
  2. Step 2: Convert to fraction form
    962.11/1,327.09 = 663.37/x
  3. Step 3: Cross multiply
    962.11x = 1,327.09 × 663.37
  4. Step 4: Simplify right side
    962.11x = 880,353.97
  5. Step 5: Solve for x
    x = 880,353.97/962.11
  6. Step 6: Final answer
    x = 915.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.