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Finding the Fourth Proportional to 585.86, 878.42 and 277.28

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Solution

The fourth proportional to 585.86, 878.42 and 277.28 is: 415.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.86 : 878.42 = 277.28 : x
  2. Step 2: Convert to fraction form
    585.86/878.42 = 277.28/x
  3. Step 3: Cross multiply
    585.86x = 878.42 × 277.28
  4. Step 4: Simplify right side
    585.86x = 243,568.30
  5. Step 5: Solve for x
    x = 243,568.30/585.86
  6. Step 6: Final answer
    x = 415.74

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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.