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Finding the Fourth Proportional to 585.44, 877.08 and 422.72

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Solution

The fourth proportional to 585.44, 877.08 and 422.72 is: 633.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.44 : 877.08 = 422.72 : x
  2. Step 2: Convert to fraction form
    585.44/877.08 = 422.72/x
  3. Step 3: Cross multiply
    585.44x = 877.08 × 422.72
  4. Step 4: Simplify right side
    585.44x = 370,759.26
  5. Step 5: Solve for x
    x = 370,759.26/585.44
  6. Step 6: Final answer
    x = 633.30

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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.