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Finding the Fourth Proportional to 1,655.22, 2,483.14 and 680.79

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Solution

The fourth proportional to 1,655.22, 2,483.14 and 680.79 is: 1,021.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655.22 : 2,483.14 = 680.79 : x
  2. Step 2: Convert to fraction form
    1,655.22/2,483.14 = 680.79/x
  3. Step 3: Cross multiply
    1,655.22x = 2,483.14 × 680.79
  4. Step 4: Simplify right side
    1,655.22x = 1,690,496.88
  5. Step 5: Solve for x
    x = 1,690,496.88/1,655.22
  6. Step 6: Final answer
    x = 1,021.31

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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.