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Finding the Fourth Proportional to 467.38, 645.87 and 343.18

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Solution

The fourth proportional to 467.38, 645.87 and 343.18 is: 474.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.38 : 645.87 = 343.18 : x
  2. Step 2: Convert to fraction form
    467.38/645.87 = 343.18/x
  3. Step 3: Cross multiply
    467.38x = 645.87 × 343.18
  4. Step 4: Simplify right side
    467.38x = 221,649.67
  5. Step 5: Solve for x
    x = 221,649.67/467.38
  6. Step 6: Final answer
    x = 474.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.