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Finding the Fourth Proportional to 356.92, 534.90 and 202.79

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Solution

The fourth proportional to 356.92, 534.90 and 202.79 is: 303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.92 : 534.90 = 202.79 : x
  2. Step 2: Convert to fraction form
    356.92/534.90 = 202.79/x
  3. Step 3: Cross multiply
    356.92x = 534.90 × 202.79
  4. Step 4: Simplify right side
    356.92x = 108,469.70
  5. Step 5: Solve for x
    x = 108,469.70/356.92
  6. Step 6: Final answer
    x = 303.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.