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Finding the Fourth Proportional to 10.57, 14.51 and 10.18

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Solution

The fourth proportional to 10.57, 14.51 and 10.18 is: 13.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.57 : 14.51 = 10.18 : x
  2. Step 2: Convert to fraction form
    10.57/14.51 = 10.18/x
  3. Step 3: Cross multiply
    10.57x = 14.51 × 10.18
  4. Step 4: Simplify right side
    10.57x = 147.71
  5. Step 5: Solve for x
    x = 147.71/10.57
  6. Step 6: Final answer
    x = 13.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.