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Finding the Fourth Proportional to 342.11, 472.40 and 237.17

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Solution

The fourth proportional to 342.11, 472.40 and 237.17 is: 327.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.11 : 472.40 = 237.17 : x
  2. Step 2: Convert to fraction form
    342.11/472.40 = 237.17/x
  3. Step 3: Cross multiply
    342.11x = 472.40 × 237.17
  4. Step 4: Simplify right side
    342.11x = 112,035.56
  5. Step 5: Solve for x
    x = 112,035.56/342.11
  6. Step 6: Final answer
    x = 327.49

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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.