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Finding the Fourth Proportional to 587.55, 809.18 and 574.79

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Solution

The fourth proportional to 587.55, 809.18 and 574.79 is: 791.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.55 : 809.18 = 574.79 : x
  2. Step 2: Convert to fraction form
    587.55/809.18 = 574.79/x
  3. Step 3: Cross multiply
    587.55x = 809.18 × 574.79
  4. Step 4: Simplify right side
    587.55x = 465,109.88
  5. Step 5: Solve for x
    x = 465,109.88/587.55
  6. Step 6: Final answer
    x = 791.61

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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.