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Finding the Fourth Proportional to 237.65, 356.31 and 129.29

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Solution

The fourth proportional to 237.65, 356.31 and 129.29 is: 193.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.65 : 356.31 = 129.29 : x
  2. Step 2: Convert to fraction form
    237.65/356.31 = 129.29/x
  3. Step 3: Cross multiply
    237.65x = 356.31 × 129.29
  4. Step 4: Simplify right side
    237.65x = 46,065.54
  5. Step 5: Solve for x
    x = 46,065.54/237.65
  6. Step 6: Final answer
    x = 193.84

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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.