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Finding the Fourth Proportional to 902.96, 1,353.24 and 325.28

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Solution

The fourth proportional to 902.96, 1,353.24 and 325.28 is: 487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.96 : 1,353.24 = 325.28 : x
  2. Step 2: Convert to fraction form
    902.96/1,353.24 = 325.28/x
  3. Step 3: Cross multiply
    902.96x = 1,353.24 × 325.28
  4. Step 4: Simplify right side
    902.96x = 440,181.91
  5. Step 5: Solve for x
    x = 440,181.91/902.96
  6. Step 6: Final answer
    x = 487.49

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Double scale
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1.5x scale

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.