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Finding the Fourth Proportional to 376.80, 562.20 and 374.40

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Solution

The fourth proportional to 376.80, 562.20 and 374.40 is: 558.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.80 : 562.20 = 374.40 : x
  2. Step 2: Convert to fraction form
    376.80/562.20 = 374.40/x
  3. Step 3: Cross multiply
    376.80x = 562.20 × 374.40
  4. Step 4: Simplify right side
    376.80x = 210,487.68
  5. Step 5: Solve for x
    x = 210,487.68/376.80
  6. Step 6: Final answer
    x = 558.62

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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.