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Finding the Fourth Proportional to 962.49, 1,327.36 and 630.80

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Solution

The fourth proportional to 962.49, 1,327.36 and 630.80 is: 869.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.49 : 1,327.36 = 630.80 : x
  2. Step 2: Convert to fraction form
    962.49/1,327.36 = 630.80/x
  3. Step 3: Cross multiply
    962.49x = 1,327.36 × 630.80
  4. Step 4: Simplify right side
    962.49x = 837,298.69
  5. Step 5: Solve for x
    x = 837,298.69/962.49
  6. Step 6: Final answer
    x = 869.93

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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.