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Finding the Fourth Proportional to 282.18, 423.28 and 191.06

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Solution

The fourth proportional to 282.18, 423.28 and 191.06 is: 286.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.18 : 423.28 = 191.06 : x
  2. Step 2: Convert to fraction form
    282.18/423.28 = 191.06/x
  3. Step 3: Cross multiply
    282.18x = 423.28 × 191.06
  4. Step 4: Simplify right side
    282.18x = 80,871.88
  5. Step 5: Solve for x
    x = 80,871.88/282.18
  6. Step 6: Final answer
    x = 286.60

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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.