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Finding the Fourth Proportional to 500.18, 750.31 and 226.40

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Solution

The fourth proportional to 500.18, 750.31 and 226.40 is: 339.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.18 : 750.31 = 226.40 : x
  2. Step 2: Convert to fraction form
    500.18/750.31 = 226.40/x
  3. Step 3: Cross multiply
    500.18x = 750.31 × 226.40
  4. Step 4: Simplify right side
    500.18x = 169,865.87
  5. Step 5: Solve for x
    x = 169,865.87/500.18
  6. Step 6: Final answer
    x = 339.61

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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.