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Finding the Fourth Proportional to 104.10, 155.95 and 63.40

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Solution

The fourth proportional to 104.10, 155.95 and 63.40 is: 94.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.10 : 155.95 = 63.40 : x
  2. Step 2: Convert to fraction form
    104.10/155.95 = 63.40/x
  3. Step 3: Cross multiply
    104.10x = 155.95 × 63.40
  4. Step 4: Simplify right side
    104.10x = 9,887.23
  5. Step 5: Solve for x
    x = 9,887.23/104.10
  6. Step 6: Final answer
    x = 94.98

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.