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Finding the Fourth Proportional to 104.10, 155.16 and 93.28

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Solution

The fourth proportional to 104.10, 155.16 and 93.28 is: 139.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.10 : 155.16 = 93.28 : x
  2. Step 2: Convert to fraction form
    104.10/155.16 = 93.28/x
  3. Step 3: Cross multiply
    104.10x = 155.16 × 93.28
  4. Step 4: Simplify right side
    104.10x = 14,472.59
  5. Step 5: Solve for x
    x = 14,472.59/104.10
  6. Step 6: Final answer
    x = 139.03

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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.