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Finding the Fourth Proportional to 910.43, 1,255.47 and 744.11

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Solution

The fourth proportional to 910.43, 1,255.47 and 744.11 is: 1,026.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.43 : 1,255.47 = 744.11 : x
  2. Step 2: Convert to fraction form
    910.43/1,255.47 = 744.11/x
  3. Step 3: Cross multiply
    910.43x = 1,255.47 × 744.11
  4. Step 4: Simplify right side
    910.43x = 934,207.78
  5. Step 5: Solve for x
    x = 934,207.78/910.43
  6. Step 6: Final answer
    x = 1,026.12

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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.