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Finding the Fourth Proportional to 587.18, 810.38 and 338.52

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Solution

The fourth proportional to 587.18, 810.38 and 338.52 is: 467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.18 : 810.38 = 338.52 : x
  2. Step 2: Convert to fraction form
    587.18/810.38 = 338.52/x
  3. Step 3: Cross multiply
    587.18x = 810.38 × 338.52
  4. Step 4: Simplify right side
    587.18x = 274,329.84
  5. Step 5: Solve for x
    x = 274,329.84/587.18
  6. Step 6: Final answer
    x = 467.20

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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.