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Finding the Fourth Proportional to 144.66, 215.54 and 135.54

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Solution

The fourth proportional to 144.66, 215.54 and 135.54 is: 201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.66 : 215.54 = 135.54 : x
  2. Step 2: Convert to fraction form
    144.66/215.54 = 135.54/x
  3. Step 3: Cross multiply
    144.66x = 215.54 × 135.54
  4. Step 4: Simplify right side
    144.66x = 29,214.29
  5. Step 5: Solve for x
    x = 29,214.29/144.66
  6. Step 6: Final answer
    x = 201.95

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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.