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Finding the Fourth Proportional to 608.80, 839.85 and 525.88

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Solution

The fourth proportional to 608.80, 839.85 and 525.88 is: 725.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.80 : 839.85 = 525.88 : x
  2. Step 2: Convert to fraction form
    608.80/839.85 = 525.88/x
  3. Step 3: Cross multiply
    608.80x = 839.85 × 525.88
  4. Step 4: Simplify right side
    608.80x = 441,660.32
  5. Step 5: Solve for x
    x = 441,660.32/608.80
  6. Step 6: Final answer
    x = 725.46

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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.