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Finding the Fourth Proportional to 283.74, 423.54 and 243.42

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Solution

The fourth proportional to 283.74, 423.54 and 243.42 is: 363.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.74 : 423.54 = 243.42 : x
  2. Step 2: Convert to fraction form
    283.74/423.54 = 243.42/x
  3. Step 3: Cross multiply
    283.74x = 423.54 × 243.42
  4. Step 4: Simplify right side
    283.74x = 103,099.93
  5. Step 5: Solve for x
    x = 103,099.93/283.74
  6. Step 6: Final answer
    x = 363.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.