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Finding the Fourth Proportional to 982.01, 1,472.69 and 519.53

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Solution

The fourth proportional to 982.01, 1,472.69 and 519.53 is: 779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.01 : 1,472.69 = 519.53 : x
  2. Step 2: Convert to fraction form
    982.01/1,472.69 = 519.53/x
  3. Step 3: Cross multiply
    982.01x = 1,472.69 × 519.53
  4. Step 4: Simplify right side
    982.01x = 765,096.67
  5. Step 5: Solve for x
    x = 765,096.67/982.01
  6. Step 6: Final answer
    x = 779.12

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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.