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Finding the Fourth Proportional to 491.91, 674.44 and 483.14

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Solution

The fourth proportional to 491.91, 674.44 and 483.14 is: 662.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.91 : 674.44 = 483.14 : x
  2. Step 2: Convert to fraction form
    491.91/674.44 = 483.14/x
  3. Step 3: Cross multiply
    491.91x = 674.44 × 483.14
  4. Step 4: Simplify right side
    491.91x = 325,843.15
  5. Step 5: Solve for x
    x = 325,843.15/491.91
  6. Step 6: Final answer
    x = 662.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.