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Finding the Fourth Proportional to 491.80, 674.28 and 483.03

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Solution

The fourth proportional to 491.80, 674.28 and 483.03 is: 662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.80 : 674.28 = 483.03 : x
  2. Step 2: Convert to fraction form
    491.80/674.28 = 483.03/x
  3. Step 3: Cross multiply
    491.80x = 674.28 × 483.03
  4. Step 4: Simplify right side
    491.80x = 325,697.47
  5. Step 5: Solve for x
    x = 325,697.47/491.80
  6. Step 6: Final answer
    x = 662.26

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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.