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Finding the Fourth Proportional to 146.41, 218.40 and 144.43

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Solution

The fourth proportional to 146.41, 218.40 and 144.43 is: 215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.41 : 218.40 = 144.43 : x
  2. Step 2: Convert to fraction form
    146.41/218.40 = 144.43/x
  3. Step 3: Cross multiply
    146.41x = 218.40 × 144.43
  4. Step 4: Simplify right side
    146.41x = 31,543.65
  5. Step 5: Solve for x
    x = 31,543.65/146.41
  6. Step 6: Final answer
    x = 215.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.