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Finding the Fourth Proportional to 499.59, 747.81 and 323.65

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Solution

The fourth proportional to 499.59, 747.81 and 323.65 is: 484.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.59 : 747.81 = 323.65 : x
  2. Step 2: Convert to fraction form
    499.59/747.81 = 323.65/x
  3. Step 3: Cross multiply
    499.59x = 747.81 × 323.65
  4. Step 4: Simplify right side
    499.59x = 242,028.71
  5. Step 5: Solve for x
    x = 242,028.71/499.59
  6. Step 6: Final answer
    x = 484.45

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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.