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Finding the Fourth Proportional to 748.43, 1,032.79 and 433.46

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Solution

The fourth proportional to 748.43, 1,032.79 and 433.46 is: 598.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.43 : 1,032.79 = 433.46 : x
  2. Step 2: Convert to fraction form
    748.43/1,032.79 = 433.46/x
  3. Step 3: Cross multiply
    748.43x = 1,032.79 × 433.46
  4. Step 4: Simplify right side
    748.43x = 447,673.15
  5. Step 5: Solve for x
    x = 447,673.15/748.43
  6. Step 6: Final answer
    x = 598.15

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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.