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Finding the Fourth Proportional to 550.70, 772.60 and 550.70

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Solution

The fourth proportional to 550.70, 772.60 and 550.70 is: 772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.70 : 772.60 = 550.70 : x
  2. Step 2: Convert to fraction form
    550.70/772.60 = 550.70/x
  3. Step 3: Cross multiply
    550.70x = 772.60 × 550.70
  4. Step 4: Simplify right side
    550.70x = 425,470.82
  5. Step 5: Solve for x
    x = 425,470.82/550.70
  6. Step 6: Final answer
    x = 772.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.