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Finding the Fourth Proportional to 682.20, 1,023.30 and 601.20

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Solution

The fourth proportional to 682.20, 1,023.30 and 601.20 is: 901.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.20 : 1,023.30 = 601.20 : x
  2. Step 2: Convert to fraction form
    682.20/1,023.30 = 601.20/x
  3. Step 3: Cross multiply
    682.20x = 1,023.30 × 601.20
  4. Step 4: Simplify right side
    682.20x = 615,207.96
  5. Step 5: Solve for x
    x = 615,207.96/682.20
  6. Step 6: Final answer
    x = 901.80

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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.