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Finding the Fourth Proportional to 203.60, 279.30 and 200.87

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Solution

The fourth proportional to 203.60, 279.30 and 200.87 is: 275.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.60 : 279.30 = 200.87 : x
  2. Step 2: Convert to fraction form
    203.60/279.30 = 200.87/x
  3. Step 3: Cross multiply
    203.60x = 279.30 × 200.87
  4. Step 4: Simplify right side
    203.60x = 56,102.99
  5. Step 5: Solve for x
    x = 56,102.99/203.60
  6. Step 6: Final answer
    x = 275.55

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.