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Finding the Fourth Proportional to 441.29, 661.51 and 210.12

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Solution

The fourth proportional to 441.29, 661.51 and 210.12 is: 314.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.29 : 661.51 = 210.12 : x
  2. Step 2: Convert to fraction form
    441.29/661.51 = 210.12/x
  3. Step 3: Cross multiply
    441.29x = 661.51 × 210.12
  4. Step 4: Simplify right side
    441.29x = 138,995.24
  5. Step 5: Solve for x
    x = 138,995.24/441.29
  6. Step 6: Final answer
    x = 314.97

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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.