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Finding the Fourth Proportional to 741.50, 1,023.42 and 461.78

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Solution

The fourth proportional to 741.50, 1,023.42 and 461.78 is: 637.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.50 : 1,023.42 = 461.78 : x
  2. Step 2: Convert to fraction form
    741.50/1,023.42 = 461.78/x
  3. Step 3: Cross multiply
    741.50x = 1,023.42 × 461.78
  4. Step 4: Simplify right side
    741.50x = 472,594.89
  5. Step 5: Solve for x
    x = 472,594.89/741.50
  6. Step 6: Final answer
    x = 637.35

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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.