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Finding the Fourth Proportional to 748.97, 1,116.01 and 667.18

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Solution

The fourth proportional to 748.97, 1,116.01 and 667.18 is: 994.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.97 : 1,116.01 = 667.18 : x
  2. Step 2: Convert to fraction form
    748.97/1,116.01 = 667.18/x
  3. Step 3: Cross multiply
    748.97x = 1,116.01 × 667.18
  4. Step 4: Simplify right side
    748.97x = 744,581.78
  5. Step 5: Solve for x
    x = 744,581.78/748.97
  6. Step 6: Final answer
    x = 994.14

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.