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Finding the Fourth Proportional to 49.10, 73.25 and 42.35

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Solution

The fourth proportional to 49.10, 73.25 and 42.35 is: 63.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.10 : 73.25 = 42.35 : x
  2. Step 2: Convert to fraction form
    49.10/73.25 = 42.35/x
  3. Step 3: Cross multiply
    49.10x = 73.25 × 42.35
  4. Step 4: Simplify right side
    49.10x = 3,101.56
  5. Step 5: Solve for x
    x = 3,101.56/49.10
  6. Step 6: Final answer
    x = 63.17

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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.