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Finding the Fourth Proportional to 412.41, 569.17 and 281.64

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Solution

The fourth proportional to 412.41, 569.17 and 281.64 is: 388.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.41 : 569.17 = 281.64 : x
  2. Step 2: Convert to fraction form
    412.41/569.17 = 281.64/x
  3. Step 3: Cross multiply
    412.41x = 569.17 × 281.64
  4. Step 4: Simplify right side
    412.41x = 160,301.04
  5. Step 5: Solve for x
    x = 160,301.04/412.41
  6. Step 6: Final answer
    x = 388.69

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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.