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Finding the Fourth Proportional to 360.18, 497.01 and 202.80

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Solution

The fourth proportional to 360.18, 497.01 and 202.80 is: 279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.18 : 497.01 = 202.80 : x
  2. Step 2: Convert to fraction form
    360.18/497.01 = 202.80/x
  3. Step 3: Cross multiply
    360.18x = 497.01 × 202.80
  4. Step 4: Simplify right side
    360.18x = 100,793.63
  5. Step 5: Solve for x
    x = 100,793.63/360.18
  6. Step 6: Final answer
    x = 279.84

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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.