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Finding the Fourth Proportional to 203.42, 280.68 and 116.09

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Solution

The fourth proportional to 203.42, 280.68 and 116.09 is: 160.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.42 : 280.68 = 116.09 : x
  2. Step 2: Convert to fraction form
    203.42/280.68 = 116.09/x
  3. Step 3: Cross multiply
    203.42x = 280.68 × 116.09
  4. Step 4: Simplify right side
    203.42x = 32,582.74
  5. Step 5: Solve for x
    x = 32,582.74/203.42
  6. Step 6: Final answer
    x = 160.18

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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.