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Finding the Fourth Proportional to 102.75, 154 and 62.14

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Solution

The fourth proportional to 102.75, 154 and 62.14 is: 93.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102.75 : 154 = 62.14 : x
  2. Step 2: Convert to fraction form
    102.75/154 = 62.14/x
  3. Step 3: Cross multiply
    102.75x = 154 × 62.14
  4. Step 4: Simplify right side
    102.75x = 9,569.56
  5. Step 5: Solve for x
    x = 9,569.56/102.75
  6. Step 6: Final answer
    x = 93.13

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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.