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Finding the Fourth Proportional to 585.15, 878.13 and 220.25

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Solution

The fourth proportional to 585.15, 878.13 and 220.25 is: 330.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.15 : 878.13 = 220.25 : x
  2. Step 2: Convert to fraction form
    585.15/878.13 = 220.25/x
  3. Step 3: Cross multiply
    585.15x = 878.13 × 220.25
  4. Step 4: Simplify right side
    585.15x = 193,403.74
  5. Step 5: Solve for x
    x = 193,403.74/585.15
  6. Step 6: Final answer
    x = 330.52

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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.