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Finding the Fourth Proportional to 205.88, 284.14 and 117.38

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Solution

The fourth proportional to 205.88, 284.14 and 117.38 is: 162.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.88 : 284.14 = 117.38 : x
  2. Step 2: Convert to fraction form
    205.88/284.14 = 117.38/x
  3. Step 3: Cross multiply
    205.88x = 284.14 × 117.38
  4. Step 4: Simplify right side
    205.88x = 33,353.21
  5. Step 5: Solve for x
    x = 33,353.21/205.88
  6. Step 6: Final answer
    x = 162.01

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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.