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Finding the Fourth Proportional to 12.40, 17.14 and 12.01

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Solution

The fourth proportional to 12.40, 17.14 and 12.01 is: 16.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.40 : 17.14 = 12.01 : x
  2. Step 2: Convert to fraction form
    12.40/17.14 = 12.01/x
  3. Step 3: Cross multiply
    12.40x = 17.14 × 12.01
  4. Step 4: Simplify right side
    12.40x = 205.71
  5. Step 5: Solve for x
    x = 205.71/12.40
  6. Step 6: Final answer
    x = 16.59

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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.