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Finding the Fourth Proportional to 45.10, 67.62 and 29.88

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Solution

The fourth proportional to 45.10, 67.62 and 29.88 is: 44.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.10 : 67.62 = 29.88 : x
  2. Step 2: Convert to fraction form
    45.10/67.62 = 29.88/x
  3. Step 3: Cross multiply
    45.10x = 67.62 × 29.88
  4. Step 4: Simplify right side
    45.10x = 2,020.49
  5. Step 5: Solve for x
    x = 2,020.49/45.10
  6. Step 6: Final answer
    x = 44.80

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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.