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Finding the Fourth Proportional to 742.68, 1,024.44 and 462.96

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Solution

The fourth proportional to 742.68, 1,024.44 and 462.96 is: 638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    742.68 : 1,024.44 = 462.96 : x
  2. Step 2: Convert to fraction form
    742.68/1,024.44 = 462.96/x
  3. Step 3: Cross multiply
    742.68x = 1,024.44 × 462.96
  4. Step 4: Simplify right side
    742.68x = 474,274.74
  5. Step 5: Solve for x
    x = 474,274.74/742.68
  6. Step 6: Final answer
    x = 638.60

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1.5x scale

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.