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Finding the Fourth Proportional to 44.99, 67.50 and 20.96

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Solution

The fourth proportional to 44.99, 67.50 and 20.96 is: 31.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.99 : 67.50 = 20.96 : x
  2. Step 2: Convert to fraction form
    44.99/67.50 = 20.96/x
  3. Step 3: Cross multiply
    44.99x = 67.50 × 20.96
  4. Step 4: Simplify right side
    44.99x = 1,414.80
  5. Step 5: Solve for x
    x = 1,414.80/44.99
  6. Step 6: Final answer
    x = 31.45

Related Problems

Find fourth proportional to 22.50, 33.75 and 10.48
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Similar ratio
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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.