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Finding the Fourth Proportional to 282.52, 423.74 and 145.44

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Solution

The fourth proportional to 282.52, 423.74 and 145.44 is: 218.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.52 : 423.74 = 145.44 : x
  2. Step 2: Convert to fraction form
    282.52/423.74 = 145.44/x
  3. Step 3: Cross multiply
    282.52x = 423.74 × 145.44
  4. Step 4: Simplify right side
    282.52x = 61,628.75
  5. Step 5: Solve for x
    x = 61,628.75/282.52
  6. Step 6: Final answer
    x = 218.14

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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.