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Finding the Fourth Proportional to 20, 29.98 and 10.97

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Solution

The fourth proportional to 20, 29.98 and 10.97 is: 16.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20 : 29.98 = 10.97 : x
  2. Step 2: Convert to fraction form
    20/29.98 = 10.97/x
  3. Step 3: Cross multiply
    20x = 29.98 × 10.97
  4. Step 4: Simplify right side
    20x = 328.88
  5. Step 5: Solve for x
    x = 328.88/20
  6. Step 6: Final answer
    x = 16.44

Related Problems

Find fourth proportional to 10, 14.99 and 5.49
Half scale
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Double scale
Find fourth proportional to 21, 31.48 and 11.97
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.