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Finding the Fourth Proportional to 602.02, 903.20 and 191.15

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Solution

The fourth proportional to 602.02, 903.20 and 191.15 is: 286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.02 : 903.20 = 191.15 : x
  2. Step 2: Convert to fraction form
    602.02/903.20 = 191.15/x
  3. Step 3: Cross multiply
    602.02x = 903.20 × 191.15
  4. Step 4: Simplify right side
    602.02x = 172,646.68
  5. Step 5: Solve for x
    x = 172,646.68/602.02
  6. Step 6: Final answer
    x = 286.78

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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.