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Finding the Fourth Proportional to 376.98, 561.08 and 372.78

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Solution

The fourth proportional to 376.98, 561.08 and 372.78 is: 554.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.98 : 561.08 = 372.78 : x
  2. Step 2: Convert to fraction form
    376.98/561.08 = 372.78/x
  3. Step 3: Cross multiply
    376.98x = 561.08 × 372.78
  4. Step 4: Simplify right side
    376.98x = 209,157.54
  5. Step 5: Solve for x
    x = 209,157.54/376.98
  6. Step 6: Final answer
    x = 554.82

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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.