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Finding the Fourth Proportional to 550.58, 759.66 and 340.86

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Solution

The fourth proportional to 550.58, 759.66 and 340.86 is: 470.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.58 : 759.66 = 340.86 : x
  2. Step 2: Convert to fraction form
    550.58/759.66 = 340.86/x
  3. Step 3: Cross multiply
    550.58x = 759.66 × 340.86
  4. Step 4: Simplify right side
    550.58x = 258,937.71
  5. Step 5: Solve for x
    x = 258,937.71/550.58
  6. Step 6: Final answer
    x = 470.30

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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.