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Finding the Fourth Proportional to 556.40, 834.62 and 191.18

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Solution

The fourth proportional to 556.40, 834.62 and 191.18 is: 286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.40 : 834.62 = 191.18 : x
  2. Step 2: Convert to fraction form
    556.40/834.62 = 191.18/x
  3. Step 3: Cross multiply
    556.40x = 834.62 × 191.18
  4. Step 4: Simplify right side
    556.40x = 159,563.78
  5. Step 5: Solve for x
    x = 159,563.78/556.40
  6. Step 6: Final answer
    x = 286.78

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1.5x scale

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.