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Finding the Fourth Proportional to 663.75, 916.02 and 467.73

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Solution

The fourth proportional to 663.75, 916.02 and 467.73 is: 645.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.75 : 916.02 = 467.73 : x
  2. Step 2: Convert to fraction form
    663.75/916.02 = 467.73/x
  3. Step 3: Cross multiply
    663.75x = 916.02 × 467.73
  4. Step 4: Simplify right side
    663.75x = 428,450.03
  5. Step 5: Solve for x
    x = 428,450.03/663.75
  6. Step 6: Final answer
    x = 645.50

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Double scale
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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.