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Finding the Fourth Proportional to 587.29, 810.62 and 338.64

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Solution

The fourth proportional to 587.29, 810.62 and 338.64 is: 467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.29 : 810.62 = 338.64 : x
  2. Step 2: Convert to fraction form
    587.29/810.62 = 338.64/x
  3. Step 3: Cross multiply
    587.29x = 810.62 × 338.64
  4. Step 4: Simplify right side
    587.29x = 274,508.36
  5. Step 5: Solve for x
    x = 274,508.36/587.29
  6. Step 6: Final answer
    x = 467.42

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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.