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Finding the Fourth Proportional to 45.75, 62.78 and 41.29

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Solution

The fourth proportional to 45.75, 62.78 and 41.29 is: 56.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.75 : 62.78 = 41.29 : x
  2. Step 2: Convert to fraction form
    45.75/62.78 = 41.29/x
  3. Step 3: Cross multiply
    45.75x = 62.78 × 41.29
  4. Step 4: Simplify right side
    45.75x = 2,592.19
  5. Step 5: Solve for x
    x = 2,592.19/45.75
  6. Step 6: Final answer
    x = 56.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.