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Finding the Fourth Proportional to 38.69, 58.03 and 10.19

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Solution

The fourth proportional to 38.69, 58.03 and 10.19 is: 15.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.69 : 58.03 = 10.19 : x
  2. Step 2: Convert to fraction form
    38.69/58.03 = 10.19/x
  3. Step 3: Cross multiply
    38.69x = 58.03 × 10.19
  4. Step 4: Simplify right side
    38.69x = 591.33
  5. Step 5: Solve for x
    x = 591.33/38.69
  6. Step 6: Final answer
    x = 15.28

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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.