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Finding the Fourth Proportional to 493.11, 738.05 and 439.11

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Solution

The fourth proportional to 493.11, 738.05 and 439.11 is: 657.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.11 : 738.05 = 439.11 : x
  2. Step 2: Convert to fraction form
    493.11/738.05 = 439.11/x
  3. Step 3: Cross multiply
    493.11x = 738.05 × 439.11
  4. Step 4: Simplify right side
    493.11x = 324,082.94
  5. Step 5: Solve for x
    x = 324,082.94/493.11
  6. Step 6: Final answer
    x = 657.22

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Double scale
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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.