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Finding the Fourth Proportional to 15.38, 23.06 and 4.69

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Solution

The fourth proportional to 15.38, 23.06 and 4.69 is: 7.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.38 : 23.06 = 4.69 : x
  2. Step 2: Convert to fraction form
    15.38/23.06 = 4.69/x
  3. Step 3: Cross multiply
    15.38x = 23.06 × 4.69
  4. Step 4: Simplify right side
    15.38x = 108.11
  5. Step 5: Solve for x
    x = 108.11/15.38
  6. Step 6: Final answer
    x = 7.03

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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.