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Finding the Fourth Proportional to 75.70, 113.56 and 41.46

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Solution

The fourth proportional to 75.70, 113.56 and 41.46 is: 62.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75.70 : 113.56 = 41.46 : x
  2. Step 2: Convert to fraction form
    75.70/113.56 = 41.46/x
  3. Step 3: Cross multiply
    75.70x = 113.56 × 41.46
  4. Step 4: Simplify right side
    75.70x = 4,708.20
  5. Step 5: Solve for x
    x = 4,708.20/75.70
  6. Step 6: Final answer
    x = 62.20

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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.