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Finding the Fourth Proportional to 556.77, 834.59 and 191.31

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Solution

The fourth proportional to 556.77, 834.59 and 191.31 is: 286.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.77 : 834.59 = 191.31 : x
  2. Step 2: Convert to fraction form
    556.77/834.59 = 191.31/x
  3. Step 3: Cross multiply
    556.77x = 834.59 × 191.31
  4. Step 4: Simplify right side
    556.77x = 159,665.41
  5. Step 5: Solve for x
    x = 159,665.41/556.77
  6. Step 6: Final answer
    x = 286.77

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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.