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Finding the Fourth Proportional to 237.90, 328.29 and 144.65

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Solution

The fourth proportional to 237.90, 328.29 and 144.65 is: 199.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.90 : 328.29 = 144.65 : x
  2. Step 2: Convert to fraction form
    237.90/328.29 = 144.65/x
  3. Step 3: Cross multiply
    237.90x = 328.29 × 144.65
  4. Step 4: Simplify right side
    237.90x = 47,485.87
  5. Step 5: Solve for x
    x = 47,485.87/237.90
  6. Step 6: Final answer
    x = 199.61

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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.