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Finding the Fourth Proportional to 602.12, 902.70 and 255.17

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Solution

The fourth proportional to 602.12, 902.70 and 255.17 is: 382.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.12 : 902.70 = 255.17 : x
  2. Step 2: Convert to fraction form
    602.12/902.70 = 255.17/x
  3. Step 3: Cross multiply
    602.12x = 902.70 × 255.17
  4. Step 4: Simplify right side
    602.12x = 230,337.45
  5. Step 5: Solve for x
    x = 230,337.45/602.12
  6. Step 6: Final answer
    x = 382.55

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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.