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Finding the Fourth Proportional to 608.80, 839.83 and 461.18

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Solution

The fourth proportional to 608.80, 839.83 and 461.18 is: 636.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.80 : 839.83 = 461.18 : x
  2. Step 2: Convert to fraction form
    608.80/839.83 = 461.18/x
  3. Step 3: Cross multiply
    608.80x = 839.83 × 461.18
  4. Step 4: Simplify right side
    608.80x = 387,312.80
  5. Step 5: Solve for x
    x = 387,312.80/608.80
  6. Step 6: Final answer
    x = 636.19

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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.