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Finding the Fourth Proportional to 558.05, 836.30 and 265.50

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Solution

The fourth proportional to 558.05, 836.30 and 265.50 is: 397.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.05 : 836.30 = 265.50 : x
  2. Step 2: Convert to fraction form
    558.05/836.30 = 265.50/x
  3. Step 3: Cross multiply
    558.05x = 836.30 × 265.50
  4. Step 4: Simplify right side
    558.05x = 222,036.32
  5. Step 5: Solve for x
    x = 222,036.32/558.05
  6. Step 6: Final answer
    x = 397.88

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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.