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Finding the Fourth Proportional to 732.36, 1,098.69 and 385.48

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Solution

The fourth proportional to 732.36, 1,098.69 and 385.48 is: 578.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.36 : 1,098.69 = 385.48 : x
  2. Step 2: Convert to fraction form
    732.36/1,098.69 = 385.48/x
  3. Step 3: Cross multiply
    732.36x = 1,098.69 × 385.48
  4. Step 4: Simplify right side
    732.36x = 423,523.02
  5. Step 5: Solve for x
    x = 423,523.02/732.36
  6. Step 6: Final answer
    x = 578.30

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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.