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Finding the Fourth Proportional to 608.87, 840.30 and 372.97

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Solution

The fourth proportional to 608.87, 840.30 and 372.97 is: 514.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.87 : 840.30 = 372.97 : x
  2. Step 2: Convert to fraction form
    608.87/840.30 = 372.97/x
  3. Step 3: Cross multiply
    608.87x = 840.30 × 372.97
  4. Step 4: Simplify right side
    608.87x = 313,404.59
  5. Step 5: Solve for x
    x = 313,404.59/608.87
  6. Step 6: Final answer
    x = 514.74

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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.