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Finding the Fourth Proportional to 282.71, 423.36 and 231.48

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Solution

The fourth proportional to 282.71, 423.36 and 231.48 is: 346.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.71 : 423.36 = 231.48 : x
  2. Step 2: Convert to fraction form
    282.71/423.36 = 231.48/x
  3. Step 3: Cross multiply
    282.71x = 423.36 × 231.48
  4. Step 4: Simplify right side
    282.71x = 97,999.37
  5. Step 5: Solve for x
    x = 97,999.37/282.71
  6. Step 6: Final answer
    x = 346.64

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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.