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Finding the Fourth Proportional to 585.26, 878.07 and 311.30

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Solution

The fourth proportional to 585.26, 878.07 and 311.30 is: 467.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.26 : 878.07 = 311.30 : x
  2. Step 2: Convert to fraction form
    585.26/878.07 = 311.30/x
  3. Step 3: Cross multiply
    585.26x = 878.07 × 311.30
  4. Step 4: Simplify right side
    585.26x = 273,343.19
  5. Step 5: Solve for x
    x = 273,343.19/585.26
  6. Step 6: Final answer
    x = 467.05

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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.