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Finding the Fourth Proportional to 732.79, 1,098.57 and 342.60

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Solution

The fourth proportional to 732.79, 1,098.57 and 342.60 is: 513.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.79 : 1,098.57 = 342.60 : x
  2. Step 2: Convert to fraction form
    732.79/1,098.57 = 342.60/x
  3. Step 3: Cross multiply
    732.79x = 1,098.57 × 342.60
  4. Step 4: Simplify right side
    732.79x = 376,367.25
  5. Step 5: Solve for x
    x = 376,367.25/732.79
  6. Step 6: Final answer
    x = 513.61

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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.