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Finding the Fourth Proportional to 602.15, 902.57 and 255.42

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Solution

The fourth proportional to 602.15, 902.57 and 255.42 is: 382.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.15 : 902.57 = 255.42 : x
  2. Step 2: Convert to fraction form
    602.15/902.57 = 255.42/x
  3. Step 3: Cross multiply
    602.15x = 902.57 × 255.42
  4. Step 4: Simplify right side
    602.15x = 230,533.15
  5. Step 5: Solve for x
    x = 230,533.15/602.15
  6. Step 6: Final answer
    x = 382.85

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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.