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Finding the Fourth Proportional to 556.35, 834.63 and 191.17

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Solution

The fourth proportional to 556.35, 834.63 and 191.17 is: 286.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.35 : 834.63 = 191.17 : x
  2. Step 2: Convert to fraction form
    556.35/834.63 = 191.17/x
  3. Step 3: Cross multiply
    556.35x = 834.63 × 191.17
  4. Step 4: Simplify right side
    556.35x = 159,556.22
  5. Step 5: Solve for x
    x = 159,556.22/556.35
  6. Step 6: Final answer
    x = 286.79

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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.