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Finding the Fourth Proportional to 2,305.10, 3,458.12 and 661.66

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Solution

The fourth proportional to 2,305.10, 3,458.12 and 661.66 is: 992.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.10 : 3,458.12 = 661.66 : x
  2. Step 2: Convert to fraction form
    2,305.10/3,458.12 = 661.66/x
  3. Step 3: Cross multiply
    2,305.10x = 3,458.12 × 661.66
  4. Step 4: Simplify right side
    2,305.10x = 2,288,087.73
  5. Step 5: Solve for x
    x = 2,288,087.73/2,305.10
  6. Step 6: Final answer
    x = 992.62

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1.5x scale

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.