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Finding the Fourth Proportional to 568.39, 852.59 and 279.76

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Solution

The fourth proportional to 568.39, 852.59 and 279.76 is: 419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.39 : 852.59 = 279.76 : x
  2. Step 2: Convert to fraction form
    568.39/852.59 = 279.76/x
  3. Step 3: Cross multiply
    568.39x = 852.59 × 279.76
  4. Step 4: Simplify right side
    568.39x = 238,520.58
  5. Step 5: Solve for x
    x = 238,520.58/568.39
  6. Step 6: Final answer
    x = 419.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.