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Finding the Fourth Proportional to 203.39, 279.78 and 170.18

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Solution

The fourth proportional to 203.39, 279.78 and 170.18 is: 234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.39 : 279.78 = 170.18 : x
  2. Step 2: Convert to fraction form
    203.39/279.78 = 170.18/x
  3. Step 3: Cross multiply
    203.39x = 279.78 × 170.18
  4. Step 4: Simplify right side
    203.39x = 47,612.26
  5. Step 5: Solve for x
    x = 47,612.26/203.39
  6. Step 6: Final answer
    x = 234.10

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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.