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Finding the Fourth Proportional to 12.10, 18.14 and 7.03

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Solution

The fourth proportional to 12.10, 18.14 and 7.03 is: 10.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12.10 : 18.14 = 7.03 : x
  2. Step 2: Convert to fraction form
    12.10/18.14 = 7.03/x
  3. Step 3: Cross multiply
    12.10x = 18.14 × 7.03
  4. Step 4: Simplify right side
    12.10x = 127.52
  5. Step 5: Solve for x
    x = 127.52/12.10
  6. Step 6: Final answer
    x = 10.54

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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.