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Finding the Fourth Proportional to 731.95, 1,098.83 and 702.79

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Solution

The fourth proportional to 731.95, 1,098.83 and 702.79 is: 1,055.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.95 : 1,098.83 = 702.79 : x
  2. Step 2: Convert to fraction form
    731.95/1,098.83 = 702.79/x
  3. Step 3: Cross multiply
    731.95x = 1,098.83 × 702.79
  4. Step 4: Simplify right side
    731.95x = 772,245.75
  5. Step 5: Solve for x
    x = 772,245.75/731.95
  6. Step 6: Final answer
    x = 1,055.06

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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.