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Finding the Fourth Proportional to 575.84, 863.66 and 191

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Solution

The fourth proportional to 575.84, 863.66 and 191 is: 286.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.84 : 863.66 = 191 : x
  2. Step 2: Convert to fraction form
    575.84/863.66 = 191/x
  3. Step 3: Cross multiply
    575.84x = 863.66 × 191
  4. Step 4: Simplify right side
    575.84x = 164,959.06
  5. Step 5: Solve for x
    x = 164,959.06/575.84
  6. Step 6: Final answer
    x = 286.47

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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.