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Finding the Fourth Proportional to 587.57, 810.78 and 338.87

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Solution

The fourth proportional to 587.57, 810.78 and 338.87 is: 467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.57 : 810.78 = 338.87 : x
  2. Step 2: Convert to fraction form
    587.57/810.78 = 338.87/x
  3. Step 3: Cross multiply
    587.57x = 810.78 × 338.87
  4. Step 4: Simplify right side
    587.57x = 274,744.96
  5. Step 5: Solve for x
    x = 274,744.96/587.57
  6. Step 6: Final answer
    x = 467.60

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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.