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Finding the Fourth Proportional to 204.40, 282.07 and 111.14

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Solution

The fourth proportional to 204.40, 282.07 and 111.14 is: 153.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.40 : 282.07 = 111.14 : x
  2. Step 2: Convert to fraction form
    204.40/282.07 = 111.14/x
  3. Step 3: Cross multiply
    204.40x = 282.07 × 111.14
  4. Step 4: Simplify right side
    204.40x = 31,349.69
  5. Step 5: Solve for x
    x = 31,349.69/204.40
  6. Step 6: Final answer
    x = 153.38

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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.