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Finding the Fourth Proportional to 411.88, 568.12 and 245.98

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Solution

The fourth proportional to 411.88, 568.12 and 245.98 is: 339.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.88 : 568.12 = 245.98 : x
  2. Step 2: Convert to fraction form
    411.88/568.12 = 245.98/x
  3. Step 3: Cross multiply
    411.88x = 568.12 × 245.98
  4. Step 4: Simplify right side
    411.88x = 139,746.16
  5. Step 5: Solve for x
    x = 139,746.16/411.88
  6. Step 6: Final answer
    x = 339.29

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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.