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Finding the Fourth Proportional to 376.89, 565.86 and 261.05

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Solution

The fourth proportional to 376.89, 565.86 and 261.05 is: 391.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.89 : 565.86 = 261.05 : x
  2. Step 2: Convert to fraction form
    376.89/565.86 = 261.05/x
  3. Step 3: Cross multiply
    376.89x = 565.86 × 261.05
  4. Step 4: Simplify right side
    376.89x = 147,714.92
  5. Step 5: Solve for x
    x = 147,714.92/376.89
  6. Step 6: Final answer
    x = 391.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.