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Finding the Fourth Proportional to 500.45, 750.22 and 423.91

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Solution

The fourth proportional to 500.45, 750.22 and 423.91 is: 635.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.45 : 750.22 = 423.91 : x
  2. Step 2: Convert to fraction form
    500.45/750.22 = 423.91/x
  3. Step 3: Cross multiply
    500.45x = 750.22 × 423.91
  4. Step 4: Simplify right side
    500.45x = 318,025.76
  5. Step 5: Solve for x
    x = 318,025.76/500.45
  6. Step 6: Final answer
    x = 635.48

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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.