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Finding the Fourth Proportional to 11.51, 17.29 and 10.25

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Solution

The fourth proportional to 11.51, 17.29 and 10.25 is: 15.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.51 : 17.29 = 10.25 : x
  2. Step 2: Convert to fraction form
    11.51/17.29 = 10.25/x
  3. Step 3: Cross multiply
    11.51x = 17.29 × 10.25
  4. Step 4: Simplify right side
    11.51x = 177.22
  5. Step 5: Solve for x
    x = 177.22/11.51
  6. Step 6: Final answer
    x = 15.40

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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.