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Finding the Fourth Proportional to 550.48, 759.72 and 314.47

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Solution

The fourth proportional to 550.48, 759.72 and 314.47 is: 433.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.48 : 759.72 = 314.47 : x
  2. Step 2: Convert to fraction form
    550.48/759.72 = 314.47/x
  3. Step 3: Cross multiply
    550.48x = 759.72 × 314.47
  4. Step 4: Simplify right side
    550.48x = 238,905.35
  5. Step 5: Solve for x
    x = 238,905.35/550.48
  6. Step 6: Final answer
    x = 433.99

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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.