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Finding the Fourth Proportional to 1,621.64, 2,432.66 and 799.94

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Solution

The fourth proportional to 1,621.64, 2,432.66 and 799.94 is: 1,200.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.64 : 2,432.66 = 799.94 : x
  2. Step 2: Convert to fraction form
    1,621.64/2,432.66 = 799.94/x
  3. Step 3: Cross multiply
    1,621.64x = 2,432.66 × 799.94
  4. Step 4: Simplify right side
    1,621.64x = 1,945,982.04
  5. Step 5: Solve for x
    x = 1,945,982.04/1,621.64
  6. Step 6: Final answer
    x = 1,200.01

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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.