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Finding the Fourth Proportional to 1,620.97, 2,431.57 and 466.81

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Solution

The fourth proportional to 1,620.97, 2,431.57 and 466.81 is: 700.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.97 : 2,431.57 = 466.81 : x
  2. Step 2: Convert to fraction form
    1,620.97/2,431.57 = 466.81/x
  3. Step 3: Cross multiply
    1,620.97x = 2,431.57 × 466.81
  4. Step 4: Simplify right side
    1,620.97x = 1,135,081.19
  5. Step 5: Solve for x
    x = 1,135,081.19/1,620.97
  6. Step 6: Final answer
    x = 700.25

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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.