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Finding the Fourth Proportional to 412.16, 568.96 and 274.24

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Solution

The fourth proportional to 412.16, 568.96 and 274.24 is: 378.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.16 : 568.96 = 274.24 : x
  2. Step 2: Convert to fraction form
    412.16/568.96 = 274.24/x
  3. Step 3: Cross multiply
    412.16x = 568.96 × 274.24
  4. Step 4: Simplify right side
    412.16x = 156,031.59
  5. Step 5: Solve for x
    x = 156,031.59/412.16
  6. Step 6: Final answer
    x = 378.57

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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.