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Finding the Fourth Proportional to 732.61, 1,098.98 and 245.80

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Solution

The fourth proportional to 732.61, 1,098.98 and 245.80 is: 368.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.61 : 1,098.98 = 245.80 : x
  2. Step 2: Convert to fraction form
    732.61/1,098.98 = 245.80/x
  3. Step 3: Cross multiply
    732.61x = 1,098.98 × 245.80
  4. Step 4: Simplify right side
    732.61x = 270,122.56
  5. Step 5: Solve for x
    x = 270,122.56/732.61
  6. Step 6: Final answer
    x = 368.72

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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.