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Finding the Fourth Proportional to 558.15, 773.51 and 550.32

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Solution

The fourth proportional to 558.15, 773.51 and 550.32 is: 762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.15 : 773.51 = 550.32 : x
  2. Step 2: Convert to fraction form
    558.15/773.51 = 550.32/x
  3. Step 3: Cross multiply
    558.15x = 773.51 × 550.32
  4. Step 4: Simplify right side
    558.15x = 425,675.27
  5. Step 5: Solve for x
    x = 425,675.27/558.15
  6. Step 6: Final answer
    x = 762.65

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.