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Finding the Fourth Proportional to 662.47, 993.55 and 432.97

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Solution

The fourth proportional to 662.47, 993.55 and 432.97 is: 649.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.47 : 993.55 = 432.97 : x
  2. Step 2: Convert to fraction form
    662.47/993.55 = 432.97/x
  3. Step 3: Cross multiply
    662.47x = 993.55 × 432.97
  4. Step 4: Simplify right side
    662.47x = 430,177.34
  5. Step 5: Solve for x
    x = 430,177.34/662.47
  6. Step 6: Final answer
    x = 649.35

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.