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Finding the Fourth Proportional to 237.15, 354.98 and 153.65

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Solution

The fourth proportional to 237.15, 354.98 and 153.65 is: 229.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.15 : 354.98 = 153.65 : x
  2. Step 2: Convert to fraction form
    237.15/354.98 = 153.65/x
  3. Step 3: Cross multiply
    237.15x = 354.98 × 153.65
  4. Step 4: Simplify right side
    237.15x = 54,540.13
  5. Step 5: Solve for x
    x = 54,540.13/237.15
  6. Step 6: Final answer
    x = 229.99

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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.