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Finding the Fourth Proportional to 310.57, 428.36 and 237.06

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Solution

The fourth proportional to 310.57, 428.36 and 237.06 is: 326.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.57 : 428.36 = 237.06 : x
  2. Step 2: Convert to fraction form
    310.57/428.36 = 237.06/x
  3. Step 3: Cross multiply
    310.57x = 428.36 × 237.06
  4. Step 4: Simplify right side
    310.57x = 101,545.84
  5. Step 5: Solve for x
    x = 101,545.84/310.57
  6. Step 6: Final answer
    x = 326.97

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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.