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Finding the Fourth Proportional to 602.54, 902.61 and 551.78

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Solution

The fourth proportional to 602.54, 902.61 and 551.78 is: 826.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.54 : 902.61 = 551.78 : x
  2. Step 2: Convert to fraction form
    602.54/902.61 = 551.78/x
  3. Step 3: Cross multiply
    602.54x = 902.61 × 551.78
  4. Step 4: Simplify right side
    602.54x = 498,042.15
  5. Step 5: Solve for x
    x = 498,042.15/602.54
  6. Step 6: Final answer
    x = 826.57

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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.