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Finding the Fourth Proportional to 206.34, 284.58 and 140.83

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Solution

The fourth proportional to 206.34, 284.58 and 140.83 is: 194.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.34 : 284.58 = 140.83 : x
  2. Step 2: Convert to fraction form
    206.34/284.58 = 140.83/x
  3. Step 3: Cross multiply
    206.34x = 284.58 × 140.83
  4. Step 4: Simplify right side
    206.34x = 40,077.40
  5. Step 5: Solve for x
    x = 40,077.40/206.34
  6. Step 6: Final answer
    x = 194.23

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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.