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Finding the Fourth Proportional to 748.25, 1,032.66 and 437.75

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Solution

The fourth proportional to 748.25, 1,032.66 and 437.75 is: 604.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.25 : 1,032.66 = 437.75 : x
  2. Step 2: Convert to fraction form
    748.25/1,032.66 = 437.75/x
  3. Step 3: Cross multiply
    748.25x = 1,032.66 × 437.75
  4. Step 4: Simplify right side
    748.25x = 452,044.73
  5. Step 5: Solve for x
    x = 452,044.73/748.25
  6. Step 6: Final answer
    x = 604.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.