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Finding the Fourth Proportional to 587.57, 810.29 and 438.55

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Solution

The fourth proportional to 587.57, 810.29 and 438.55 is: 604.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.57 : 810.29 = 438.55 : x
  2. Step 2: Convert to fraction form
    587.57/810.29 = 438.55/x
  3. Step 3: Cross multiply
    587.57x = 810.29 × 438.55
  4. Step 4: Simplify right side
    587.57x = 355,352.68
  5. Step 5: Solve for x
    x = 355,352.68/587.57
  6. Step 6: Final answer
    x = 604.79

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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.