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Finding the Fourth Proportional to 2,301.20, 3,451.80 and 657.74

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Solution

The fourth proportional to 2,301.20, 3,451.80 and 657.74 is: 986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,301.20 : 3,451.80 = 657.74 : x
  2. Step 2: Convert to fraction form
    2,301.20/3,451.80 = 657.74/x
  3. Step 3: Cross multiply
    2,301.20x = 3,451.80 × 657.74
  4. Step 4: Simplify right side
    2,301.20x = 2,270,369.67
  5. Step 5: Solve for x
    x = 2,270,369.67/2,301.20
  6. Step 6: Final answer
    x = 986.60

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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.