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Finding the Fourth Proportional to 558.32, 837.48 and 328.81

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Solution

The fourth proportional to 558.32, 837.48 and 328.81 is: 493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.32 : 837.48 = 328.81 : x
  2. Step 2: Convert to fraction form
    558.32/837.48 = 328.81/x
  3. Step 3: Cross multiply
    558.32x = 837.48 × 328.81
  4. Step 4: Simplify right side
    558.32x = 275,365.97
  5. Step 5: Solve for x
    x = 275,365.97/558.32
  6. Step 6: Final answer
    x = 493.20

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Double scale
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Similar ratio
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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.