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Finding the Fourth Proportional to 732.72, 1,098.81 and 245.64

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Solution

The fourth proportional to 732.72, 1,098.81 and 245.64 is: 368.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.72 : 1,098.81 = 245.64 : x
  2. Step 2: Convert to fraction form
    732.72/1,098.81 = 245.64/x
  3. Step 3: Cross multiply
    732.72x = 1,098.81 × 245.64
  4. Step 4: Simplify right side
    732.72x = 269,911.69
  5. Step 5: Solve for x
    x = 269,911.69/732.72
  6. Step 6: Final answer
    x = 368.37

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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.