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Finding the Fourth Proportional to 2,209.77, 3,314.63 and 670.77

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Solution

The fourth proportional to 2,209.77, 3,314.63 and 670.77 is: 1,006.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.77 : 3,314.63 = 670.77 : x
  2. Step 2: Convert to fraction form
    2,209.77/3,314.63 = 670.77/x
  3. Step 3: Cross multiply
    2,209.77x = 3,314.63 × 670.77
  4. Step 4: Simplify right side
    2,209.77x = 2,223,354.37
  5. Step 5: Solve for x
    x = 2,223,354.37/2,209.77
  6. Step 6: Final answer
    x = 1,006.15

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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.