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Finding the Fourth Proportional to 550.44, 759.36 and 317.40

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Solution

The fourth proportional to 550.44, 759.36 and 317.40 is: 437.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.44 : 759.36 = 317.40 : x
  2. Step 2: Convert to fraction form
    550.44/759.36 = 317.40/x
  3. Step 3: Cross multiply
    550.44x = 759.36 × 317.40
  4. Step 4: Simplify right side
    550.44x = 241,020.86
  5. Step 5: Solve for x
    x = 241,020.86/550.44
  6. Step 6: Final answer
    x = 437.87

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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.