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Finding the Fourth Proportional to 608.88, 840.24 and 372.80

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Solution

The fourth proportional to 608.88, 840.24 and 372.80 is: 514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.88 : 840.24 = 372.80 : x
  2. Step 2: Convert to fraction form
    608.88/840.24 = 372.80/x
  3. Step 3: Cross multiply
    608.88x = 840.24 × 372.80
  4. Step 4: Simplify right side
    608.88x = 313,237.27
  5. Step 5: Solve for x
    x = 313,237.27/608.88
  6. Step 6: Final answer
    x = 514.45

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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.