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Finding the Fourth Proportional to 200.34, 275.85 and 158.76

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Solution

The fourth proportional to 200.34, 275.85 and 158.76 is: 218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.34 : 275.85 = 158.76 : x
  2. Step 2: Convert to fraction form
    200.34/275.85 = 158.76/x
  3. Step 3: Cross multiply
    200.34x = 275.85 × 158.76
  4. Step 4: Simplify right side
    200.34x = 43,793.95
  5. Step 5: Solve for x
    x = 43,793.95/200.34
  6. Step 6: Final answer
    x = 218.60

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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.