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Finding the Fourth Proportional to 491.97, 674.52 and 483.20

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Solution

The fourth proportional to 491.97, 674.52 and 483.20 is: 662.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.97 : 674.52 = 483.20 : x
  2. Step 2: Convert to fraction form
    491.97/674.52 = 483.20/x
  3. Step 3: Cross multiply
    491.97x = 674.52 × 483.20
  4. Step 4: Simplify right side
    491.97x = 325,924.69
  5. Step 5: Solve for x
    x = 325,924.69/491.97
  6. Step 6: Final answer
    x = 662.49

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