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Finding the Fourth Proportional to 749.10, 1,033.68 and 417.48

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Solution

The fourth proportional to 749.10, 1,033.68 and 417.48 is: 576.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.10 : 1,033.68 = 417.48 : x
  2. Step 2: Convert to fraction form
    749.10/1,033.68 = 417.48/x
  3. Step 3: Cross multiply
    749.10x = 1,033.68 × 417.48
  4. Step 4: Simplify right side
    749.10x = 431,540.73
  5. Step 5: Solve for x
    x = 431,540.73/749.10
  6. Step 6: Final answer
    x = 576.08

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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.