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Finding the Fourth Proportional to 932.98, 1,397.31 and 900.58

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Solution

The fourth proportional to 932.98, 1,397.31 and 900.58 is: 1,348.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.98 : 1,397.31 = 900.58 : x
  2. Step 2: Convert to fraction form
    932.98/1,397.31 = 900.58/x
  3. Step 3: Cross multiply
    932.98x = 1,397.31 × 900.58
  4. Step 4: Simplify right side
    932.98x = 1,258,389.44
  5. Step 5: Solve for x
    x = 1,258,389.44/932.98
  6. Step 6: Final answer
    x = 1,348.79

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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.