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Finding the Fourth Proportional to 2,240.94, 3,362.01 and 780.16

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Solution

The fourth proportional to 2,240.94, 3,362.01 and 780.16 is: 1,170.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.94 : 3,362.01 = 780.16 : x
  2. Step 2: Convert to fraction form
    2,240.94/3,362.01 = 780.16/x
  3. Step 3: Cross multiply
    2,240.94x = 3,362.01 × 780.16
  4. Step 4: Simplify right side
    2,240.94x = 2,622,905.72
  5. Step 5: Solve for x
    x = 2,622,905.72/2,240.94
  6. Step 6: Final answer
    x = 1,170.45

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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.