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Finding the Fourth Proportional to 283.56, 424.22 and 281.48

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Solution

The fourth proportional to 283.56, 424.22 and 281.48 is: 421.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.56 : 424.22 = 281.48 : x
  2. Step 2: Convert to fraction form
    283.56/424.22 = 281.48/x
  3. Step 3: Cross multiply
    283.56x = 424.22 × 281.48
  4. Step 4: Simplify right side
    283.56x = 119,409.45
  5. Step 5: Solve for x
    x = 119,409.45/283.56
  6. Step 6: Final answer
    x = 421.11

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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.