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Finding the Fourth Proportional to 1,992.08, 2,988.12 and 605.30

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Solution

The fourth proportional to 1,992.08, 2,988.12 and 605.30 is: 907.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.08 : 2,988.12 = 605.30 : x
  2. Step 2: Convert to fraction form
    1,992.08/2,988.12 = 605.30/x
  3. Step 3: Cross multiply
    1,992.08x = 2,988.12 × 605.30
  4. Step 4: Simplify right side
    1,992.08x = 1,808,694.10
  5. Step 5: Solve for x
    x = 1,808,694.10/1,992.08
  6. Step 6: Final answer
    x = 907.94

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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.