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Finding the Fourth Proportional to 608.58, 839.76 and 372.65

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Solution

The fourth proportional to 608.58, 839.76 and 372.65 is: 514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.58 : 839.76 = 372.65 : x
  2. Step 2: Convert to fraction form
    608.58/839.76 = 372.65/x
  3. Step 3: Cross multiply
    608.58x = 839.76 × 372.65
  4. Step 4: Simplify right side
    608.58x = 312,932.37
  5. Step 5: Solve for x
    x = 312,932.37/608.58
  6. Step 6: Final answer
    x = 514.20

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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.