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Finding the Fourth Proportional to 663.30, 993.60 and 500.49

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Solution

The fourth proportional to 663.30, 993.60 and 500.49 is: 749.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.30 : 993.60 = 500.49 : x
  2. Step 2: Convert to fraction form
    663.30/993.60 = 500.49/x
  3. Step 3: Cross multiply
    663.30x = 993.60 × 500.49
  4. Step 4: Simplify right side
    663.30x = 497,286.86
  5. Step 5: Solve for x
    x = 497,286.86/663.30
  6. Step 6: Final answer
    x = 749.72

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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.