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Finding the Fourth Proportional to 411.87, 568.26 and 279.03

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Solution

The fourth proportional to 411.87, 568.26 and 279.03 is: 384.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.87 : 568.26 = 279.03 : x
  2. Step 2: Convert to fraction form
    411.87/568.26 = 279.03/x
  3. Step 3: Cross multiply
    411.87x = 568.26 × 279.03
  4. Step 4: Simplify right side
    411.87x = 158,561.59
  5. Step 5: Solve for x
    x = 158,561.59/411.87
  6. Step 6: Final answer
    x = 384.98

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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.