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Finding the Fourth Proportional to 10, 15.01 and 5.25

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Solution

The fourth proportional to 10, 15.01 and 5.25 is: 7.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10 : 15.01 = 5.25 : x
  2. Step 2: Convert to fraction form
    10/15.01 = 5.25/x
  3. Step 3: Cross multiply
    10x = 15.01 × 5.25
  4. Step 4: Simplify right side
    10x = 78.80
  5. Step 5: Solve for x
    x = 78.80/10
  6. Step 6: Final answer
    x = 7.88

Related Problems

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Double scale
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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.