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Finding the Fourth Proportional to 550.25, 759.35 and 317.38

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Solution

The fourth proportional to 550.25, 759.35 and 317.38 is: 437.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.25 : 759.35 = 317.38 : x
  2. Step 2: Convert to fraction form
    550.25/759.35 = 317.38/x
  3. Step 3: Cross multiply
    550.25x = 759.35 × 317.38
  4. Step 4: Simplify right side
    550.25x = 241,002.50
  5. Step 5: Solve for x
    x = 241,002.50/550.25
  6. Step 6: Final answer
    x = 437.99

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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.