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Finding the Fourth Proportional to 2,300.79, 3,451.79 and 657.46

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Solution

The fourth proportional to 2,300.79, 3,451.79 and 657.46 is: 986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,300.79 : 3,451.79 = 657.46 : x
  2. Step 2: Convert to fraction form
    2,300.79/3,451.79 = 657.46/x
  3. Step 3: Cross multiply
    2,300.79x = 3,451.79 × 657.46
  4. Step 4: Simplify right side
    2,300.79x = 2,269,413.85
  5. Step 5: Solve for x
    x = 2,269,413.85/2,300.79
  6. Step 6: Final answer
    x = 986.36

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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.