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Finding the Fourth Proportional to 411.74, 568.14 and 245.91

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Solution

The fourth proportional to 411.74, 568.14 and 245.91 is: 339.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.74 : 568.14 = 245.91 : x
  2. Step 2: Convert to fraction form
    411.74/568.14 = 245.91/x
  3. Step 3: Cross multiply
    411.74x = 568.14 × 245.91
  4. Step 4: Simplify right side
    411.74x = 139,711.31
  5. Step 5: Solve for x
    x = 139,711.31/411.74
  6. Step 6: Final answer
    x = 339.32

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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.