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Finding the Fourth Proportional to 602.20, 903.25 and 191.53

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Solution

The fourth proportional to 602.20, 903.25 and 191.53 is: 287.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.20 : 903.25 = 191.53 : x
  2. Step 2: Convert to fraction form
    602.20/903.25 = 191.53/x
  3. Step 3: Cross multiply
    602.20x = 903.25 × 191.53
  4. Step 4: Simplify right side
    602.20x = 173,000.84
  5. Step 5: Solve for x
    x = 173,000.84/602.20
  6. Step 6: Final answer
    x = 287.28

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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.