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Finding the Fourth Proportional to 979.10, 1,468.24 and 671.05

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Solution

The fourth proportional to 979.10, 1,468.24 and 671.05 is: 1,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    979.10 : 1,468.24 = 671.05 : x
  2. Step 2: Convert to fraction form
    979.10/1,468.24 = 671.05/x
  3. Step 3: Cross multiply
    979.10x = 1,468.24 × 671.05
  4. Step 4: Simplify right side
    979.10x = 985,262.61
  5. Step 5: Solve for x
    x = 985,262.61/979.10
  6. Step 6: Final answer
    x = 1,006.30

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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.