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Finding the Fourth Proportional to 2,008.07, 3,011 and 621.02

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Solution

The fourth proportional to 2,008.07, 3,011 and 621.02 is: 931.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,008.07 : 3,011 = 621.02 : x
  2. Step 2: Convert to fraction form
    2,008.07/3,011 = 621.02/x
  3. Step 3: Cross multiply
    2,008.07x = 3,011 × 621.02
  4. Step 4: Simplify right side
    2,008.07x = 1,869,891.22
  5. Step 5: Solve for x
    x = 1,869,891.22/2,008.07
  6. Step 6: Final answer
    x = 931.19

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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.