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Finding the Fourth Proportional to 550.75, 760.05 and 302.09

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Solution

The fourth proportional to 550.75, 760.05 and 302.09 is: 416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.75 : 760.05 = 302.09 : x
  2. Step 2: Convert to fraction form
    550.75/760.05 = 302.09/x
  3. Step 3: Cross multiply
    550.75x = 760.05 × 302.09
  4. Step 4: Simplify right side
    550.75x = 229,604.65
  5. Step 5: Solve for x
    x = 229,604.65/550.75
  6. Step 6: Final answer
    x = 416.89

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Find fourth proportional to 275.38, 380.02 and 151.05
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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.