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Finding the Fourth Proportional to 608.04, 839.43 and 372.05

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Solution

The fourth proportional to 608.04, 839.43 and 372.05 is: 513.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.04 : 839.43 = 372.05 : x
  2. Step 2: Convert to fraction form
    608.04/839.43 = 372.05/x
  3. Step 3: Cross multiply
    608.04x = 839.43 × 372.05
  4. Step 4: Simplify right side
    608.04x = 312,309.93
  5. Step 5: Solve for x
    x = 312,309.93/608.04
  6. Step 6: Final answer
    x = 513.63

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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.