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Finding the Fourth Proportional to 550.99, 759.79 and 472.57

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Solution

The fourth proportional to 550.99, 759.79 and 472.57 is: 651.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.99 : 759.79 = 472.57 : x
  2. Step 2: Convert to fraction form
    550.99/759.79 = 472.57/x
  3. Step 3: Cross multiply
    550.99x = 759.79 × 472.57
  4. Step 4: Simplify right side
    550.99x = 359,053.96
  5. Step 5: Solve for x
    x = 359,053.96/550.99
  6. Step 6: Final answer
    x = 651.65

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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.