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Finding the Fourth Proportional to 558.95, 772.31 and 539.24

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Solution

The fourth proportional to 558.95, 772.31 and 539.24 is: 745.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.95 : 772.31 = 539.24 : x
  2. Step 2: Convert to fraction form
    558.95/772.31 = 539.24/x
  3. Step 3: Cross multiply
    558.95x = 772.31 × 539.24
  4. Step 4: Simplify right side
    558.95x = 416,453.89
  5. Step 5: Solve for x
    x = 416,453.89/558.95
  6. Step 6: Final answer
    x = 745.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.