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Finding the Fourth Proportional to 1,308.29, 1,961.21 and 1,062.86

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Solution

The fourth proportional to 1,308.29, 1,961.21 and 1,062.86 is: 1,593.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.29 : 1,961.21 = 1,062.86 : x
  2. Step 2: Convert to fraction form
    1,308.29/1,961.21 = 1,062.86/x
  3. Step 3: Cross multiply
    1,308.29x = 1,961.21 × 1,062.86
  4. Step 4: Simplify right side
    1,308.29x = 2,084,484.51
  5. Step 5: Solve for x
    x = 2,084,484.51/1,308.29
  6. Step 6: Final answer
    x = 1,593.30

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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.