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Finding the Fourth Proportional to 610.86, 843.21 and 436.74

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Solution

The fourth proportional to 610.86, 843.21 and 436.74 is: 602.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.86 : 843.21 = 436.74 : x
  2. Step 2: Convert to fraction form
    610.86/843.21 = 436.74/x
  3. Step 3: Cross multiply
    610.86x = 843.21 × 436.74
  4. Step 4: Simplify right side
    610.86x = 368,263.54
  5. Step 5: Solve for x
    x = 368,263.54/610.86
  6. Step 6: Final answer
    x = 602.86

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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.