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Finding the Fourth Proportional to 979.61, 1,467.89 and 568.94

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Solution

The fourth proportional to 979.61, 1,467.89 and 568.94 is: 852.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    979.61 : 1,467.89 = 568.94 : x
  2. Step 2: Convert to fraction form
    979.61/1,467.89 = 568.94/x
  3. Step 3: Cross multiply
    979.61x = 1,467.89 × 568.94
  4. Step 4: Simplify right side
    979.61x = 835,139.09
  5. Step 5: Solve for x
    x = 835,139.09/979.61
  6. Step 6: Final answer
    x = 852.52

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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.