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Finding the Fourth Proportional to 2,066.80, 3,100.20 and 606.10

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Solution

The fourth proportional to 2,066.80, 3,100.20 and 606.10 is: 909.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.80 : 3,100.20 = 606.10 : x
  2. Step 2: Convert to fraction form
    2,066.80/3,100.20 = 606.10/x
  3. Step 3: Cross multiply
    2,066.80x = 3,100.20 × 606.10
  4. Step 4: Simplify right side
    2,066.80x = 1,879,031.22
  5. Step 5: Solve for x
    x = 1,879,031.22/2,066.80
  6. Step 6: Final answer
    x = 909.15

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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.