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Finding the Fourth Proportional to 10.25, 14.15 and 7.52

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Solution

The fourth proportional to 10.25, 14.15 and 7.52 is: 10.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.25 : 14.15 = 7.52 : x
  2. Step 2: Convert to fraction form
    10.25/14.15 = 7.52/x
  3. Step 3: Cross multiply
    10.25x = 14.15 × 7.52
  4. Step 4: Simplify right side
    10.25x = 106.41
  5. Step 5: Solve for x
    x = 106.41/10.25
  6. Step 6: Final answer
    x = 10.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.