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Finding the Fourth Proportional to 587.29, 810.36 and 338.60

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Solution

The fourth proportional to 587.29, 810.36 and 338.60 is: 467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.29 : 810.36 = 338.60 : x
  2. Step 2: Convert to fraction form
    587.29/810.36 = 338.60/x
  3. Step 3: Cross multiply
    587.29x = 810.36 × 338.60
  4. Step 4: Simplify right side
    587.29x = 274,387.90
  5. Step 5: Solve for x
    x = 274,387.90/587.29
  6. Step 6: Final answer
    x = 467.21

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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.