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Finding the Fourth Proportional to 148.45, 204.81 and 93.17

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Solution

The fourth proportional to 148.45, 204.81 and 93.17 is: 128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.45 : 204.81 = 93.17 : x
  2. Step 2: Convert to fraction form
    148.45/204.81 = 93.17/x
  3. Step 3: Cross multiply
    148.45x = 204.81 × 93.17
  4. Step 4: Simplify right side
    148.45x = 19,082.15
  5. Step 5: Solve for x
    x = 19,082.15/148.45
  6. Step 6: Final answer
    x = 128.54

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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.