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Finding the Fourth Proportional to 40.98, 61.50 and 40.62

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Solution

The fourth proportional to 40.98, 61.50 and 40.62 is: 60.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.98 : 61.50 = 40.62 : x
  2. Step 2: Convert to fraction form
    40.98/61.50 = 40.62/x
  3. Step 3: Cross multiply
    40.98x = 61.50 × 40.62
  4. Step 4: Simplify right side
    40.98x = 2,498.13
  5. Step 5: Solve for x
    x = 2,498.13/40.98
  6. Step 6: Final answer
    x = 60.96

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1.5x scale

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.