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Finding the Fourth Proportional to 1,308.08, 1,962.08 and 1,090.96

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Solution

The fourth proportional to 1,308.08, 1,962.08 and 1,090.96 is: 1,636.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.08 : 1,962.08 = 1,090.96 : x
  2. Step 2: Convert to fraction form
    1,308.08/1,962.08 = 1,090.96/x
  3. Step 3: Cross multiply
    1,308.08x = 1,962.08 × 1,090.96
  4. Step 4: Simplify right side
    1,308.08x = 2,140,550.80
  5. Step 5: Solve for x
    x = 2,140,550.80/1,308.08
  6. Step 6: Final answer
    x = 1,636.41

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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.