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Finding the Fourth Proportional to 902.41, 1,353.51 and 253.20

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Solution

The fourth proportional to 902.41, 1,353.51 and 253.20 is: 379.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.41 : 1,353.51 = 253.20 : x
  2. Step 2: Convert to fraction form
    902.41/1,353.51 = 253.20/x
  3. Step 3: Cross multiply
    902.41x = 1,353.51 × 253.20
  4. Step 4: Simplify right side
    902.41x = 342,708.73
  5. Step 5: Solve for x
    x = 342,708.73/902.41
  6. Step 6: Final answer
    x = 379.77

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Double scale
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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.