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Finding the Fourth Proportional to 281.80, 423.16 and 236.52

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Solution

The fourth proportional to 281.80, 423.16 and 236.52 is: 355.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.80 : 423.16 = 236.52 : x
  2. Step 2: Convert to fraction form
    281.80/423.16 = 236.52/x
  3. Step 3: Cross multiply
    281.80x = 423.16 × 236.52
  4. Step 4: Simplify right side
    281.80x = 100,085.80
  5. Step 5: Solve for x
    x = 100,085.80/281.80
  6. Step 6: Final answer
    x = 355.17

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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.