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Finding the Fourth Proportional to 372.90, 556.84 and 304.56

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Solution

The fourth proportional to 372.90, 556.84 and 304.56 is: 454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.90 : 556.84 = 304.56 : x
  2. Step 2: Convert to fraction form
    372.90/556.84 = 304.56/x
  3. Step 3: Cross multiply
    372.90x = 556.84 × 304.56
  4. Step 4: Simplify right side
    372.90x = 169,591.57
  5. Step 5: Solve for x
    x = 169,591.57/372.90
  6. Step 6: Final answer
    x = 454.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.