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Finding the Fourth Proportional to 732.51, 1,098.75 and 440.09

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Solution

The fourth proportional to 732.51, 1,098.75 and 440.09 is: 660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.51 : 1,098.75 = 440.09 : x
  2. Step 2: Convert to fraction form
    732.51/1,098.75 = 440.09/x
  3. Step 3: Cross multiply
    732.51x = 1,098.75 × 440.09
  4. Step 4: Simplify right side
    732.51x = 483,548.89
  5. Step 5: Solve for x
    x = 483,548.89/732.51
  6. Step 6: Final answer
    x = 660.13

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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.