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Finding the Fourth Proportional to 859.24, 1,287.96 and 585.37

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Solution

The fourth proportional to 859.24, 1,287.96 and 585.37 is: 877.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    859.24 : 1,287.96 = 585.37 : x
  2. Step 2: Convert to fraction form
    859.24/1,287.96 = 585.37/x
  3. Step 3: Cross multiply
    859.24x = 1,287.96 × 585.37
  4. Step 4: Simplify right side
    859.24x = 753,933.15
  5. Step 5: Solve for x
    x = 753,933.15/859.24
  6. Step 6: Final answer
    x = 877.44

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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.