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Finding the Fourth Proportional to 932.60, 1,392.09 and 801.80

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Solution

The fourth proportional to 932.60, 1,392.09 and 801.80 is: 1,196.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.60 : 1,392.09 = 801.80 : x
  2. Step 2: Convert to fraction form
    932.60/1,392.09 = 801.80/x
  3. Step 3: Cross multiply
    932.60x = 1,392.09 × 801.80
  4. Step 4: Simplify right side
    932.60x = 1,116,177.76
  5. Step 5: Solve for x
    x = 1,116,177.76/932.60
  6. Step 6: Final answer
    x = 1,196.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.