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Finding the Fourth Proportional to 558.33, 836.06 and 385.53

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Solution

The fourth proportional to 558.33, 836.06 and 385.53 is: 577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.33 : 836.06 = 385.53 : x
  2. Step 2: Convert to fraction form
    558.33/836.06 = 385.53/x
  3. Step 3: Cross multiply
    558.33x = 836.06 × 385.53
  4. Step 4: Simplify right side
    558.33x = 322,324.28
  5. Step 5: Solve for x
    x = 322,324.28/558.33
  6. Step 6: Final answer
    x = 577.30

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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.