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Finding the Fourth Proportional to 610.89, 842.73 and 587.31

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Solution

The fourth proportional to 610.89, 842.73 and 587.31 is: 810.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.89 : 842.73 = 587.31 : x
  2. Step 2: Convert to fraction form
    610.89/842.73 = 587.31/x
  3. Step 3: Cross multiply
    610.89x = 842.73 × 587.31
  4. Step 4: Simplify right side
    610.89x = 494,943.76
  5. Step 5: Solve for x
    x = 494,943.76/610.89
  6. Step 6: Final answer
    x = 810.20

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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.