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Finding the Fourth Proportional to 202.57, 305.29 and 200.76

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Solution

The fourth proportional to 202.57, 305.29 and 200.76 is: 302.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.57 : 305.29 = 200.76 : x
  2. Step 2: Convert to fraction form
    202.57/305.29 = 200.76/x
  3. Step 3: Cross multiply
    202.57x = 305.29 × 200.76
  4. Step 4: Simplify right side
    202.57x = 61,290.02
  5. Step 5: Solve for x
    x = 61,290.02/202.57
  6. Step 6: Final answer
    x = 302.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.