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Finding the Fourth Proportional to 550.08, 758.28 and 392.17

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Solution

The fourth proportional to 550.08, 758.28 and 392.17 is: 540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.08 : 758.28 = 392.17 : x
  2. Step 2: Convert to fraction form
    550.08/758.28 = 392.17/x
  3. Step 3: Cross multiply
    550.08x = 758.28 × 392.17
  4. Step 4: Simplify right side
    550.08x = 297,374.67
  5. Step 5: Solve for x
    x = 297,374.67/550.08
  6. Step 6: Final answer
    x = 540.60

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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.