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Finding the Fourth Proportional to 412.02, 568.68 and 281.34

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Solution

The fourth proportional to 412.02, 568.68 and 281.34 is: 388.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.02 : 568.68 = 281.34 : x
  2. Step 2: Convert to fraction form
    412.02/568.68 = 281.34/x
  3. Step 3: Cross multiply
    412.02x = 568.68 × 281.34
  4. Step 4: Simplify right side
    412.02x = 159,992.43
  5. Step 5: Solve for x
    x = 159,992.43/412.02
  6. Step 6: Final answer
    x = 388.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.