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Finding the Fourth Proportional to 144.14, 215.74 and 102.98

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Solution

The fourth proportional to 144.14, 215.74 and 102.98 is: 154.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.14 : 215.74 = 102.98 : x
  2. Step 2: Convert to fraction form
    144.14/215.74 = 102.98/x
  3. Step 3: Cross multiply
    144.14x = 215.74 × 102.98
  4. Step 4: Simplify right side
    144.14x = 22,217.19
  5. Step 5: Solve for x
    x = 22,217.19/144.14
  6. Step 6: Final answer
    x = 154.14

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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.