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Finding the Fourth Proportional to 363.58, 501.73 and 221.74

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Solution

The fourth proportional to 363.58, 501.73 and 221.74 is: 305.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.58 : 501.73 = 221.74 : x
  2. Step 2: Convert to fraction form
    363.58/501.73 = 221.74/x
  3. Step 3: Cross multiply
    363.58x = 501.73 × 221.74
  4. Step 4: Simplify right side
    363.58x = 111,253.61
  5. Step 5: Solve for x
    x = 111,253.61/363.58
  6. Step 6: Final answer
    x = 305.99

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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.