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Finding the Fourth Proportional to 550.12, 758.94 and 317.08

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Solution

The fourth proportional to 550.12, 758.94 and 317.08 is: 437.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.12 : 758.94 = 317.08 : x
  2. Step 2: Convert to fraction form
    550.12/758.94 = 317.08/x
  3. Step 3: Cross multiply
    550.12x = 758.94 × 317.08
  4. Step 4: Simplify right side
    550.12x = 240,644.70
  5. Step 5: Solve for x
    x = 240,644.70/550.12
  6. Step 6: Final answer
    x = 437.44

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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.