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Finding the Fourth Proportional to 836.04, 1,248.08 and 726.72

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Solution

The fourth proportional to 836.04, 1,248.08 and 726.72 is: 1,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.04 : 1,248.08 = 726.72 : x
  2. Step 2: Convert to fraction form
    836.04/1,248.08 = 726.72/x
  3. Step 3: Cross multiply
    836.04x = 1,248.08 × 726.72
  4. Step 4: Simplify right side
    836.04x = 907,001.06
  5. Step 5: Solve for x
    x = 907,001.06/836.04
  6. Step 6: Final answer
    x = 1,084.88

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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.