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Finding the Fourth Proportional to 585.75, 808.71 and 379.11

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Solution

The fourth proportional to 585.75, 808.71 and 379.11 is: 523.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.75 : 808.71 = 379.11 : x
  2. Step 2: Convert to fraction form
    585.75/808.71 = 379.11/x
  3. Step 3: Cross multiply
    585.75x = 808.71 × 379.11
  4. Step 4: Simplify right side
    585.75x = 306,590.05
  5. Step 5: Solve for x
    x = 306,590.05/585.75
  6. Step 6: Final answer
    x = 523.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.