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Finding the Fourth Proportional to 440.46, 664.20 and 432.27

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Solution

The fourth proportional to 440.46, 664.20 and 432.27 is: 651.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.46 : 664.20 = 432.27 : x
  2. Step 2: Convert to fraction form
    440.46/664.20 = 432.27/x
  3. Step 3: Cross multiply
    440.46x = 664.20 × 432.27
  4. Step 4: Simplify right side
    440.46x = 287,113.73
  5. Step 5: Solve for x
    x = 287,113.73/440.46
  6. Step 6: Final answer
    x = 651.85

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.