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Finding the Fourth Proportional to 587.43, 810.56 and 351.47

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Solution

The fourth proportional to 587.43, 810.56 and 351.47 is: 484.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.43 : 810.56 = 351.47 : x
  2. Step 2: Convert to fraction form
    587.43/810.56 = 351.47/x
  3. Step 3: Cross multiply
    587.43x = 810.56 × 351.47
  4. Step 4: Simplify right side
    587.43x = 284,887.79
  5. Step 5: Solve for x
    x = 284,887.79/587.43
  6. Step 6: Final answer
    x = 484.97

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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.