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Finding the Fourth Proportional to 499.68, 747.50 and 445.01

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Solution

The fourth proportional to 499.68, 747.50 and 445.01 is: 665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.68 : 747.50 = 445.01 : x
  2. Step 2: Convert to fraction form
    499.68/747.50 = 445.01/x
  3. Step 3: Cross multiply
    499.68x = 747.50 × 445.01
  4. Step 4: Simplify right side
    499.68x = 332,639.01
  5. Step 5: Solve for x
    x = 332,639.01/499.68
  6. Step 6: Final answer
    x = 665.70

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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.