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Finding the Fourth Proportional to 558.36, 836.01 and 490.86

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Solution

The fourth proportional to 558.36, 836.01 and 490.86 is: 734.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.36 : 836.01 = 490.86 : x
  2. Step 2: Convert to fraction form
    558.36/836.01 = 490.86/x
  3. Step 3: Cross multiply
    558.36x = 836.01 × 490.86
  4. Step 4: Simplify right side
    558.36x = 410,363.87
  5. Step 5: Solve for x
    x = 410,363.87/558.36
  6. Step 6: Final answer
    x = 734.94

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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.