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Finding the Fourth Proportional to 1,615.16, 2,422.29 and 444.88

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Solution

The fourth proportional to 1,615.16, 2,422.29 and 444.88 is: 667.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.16 : 2,422.29 = 444.88 : x
  2. Step 2: Convert to fraction form
    1,615.16/2,422.29 = 444.88/x
  3. Step 3: Cross multiply
    1,615.16x = 2,422.29 × 444.88
  4. Step 4: Simplify right side
    1,615.16x = 1,077,616.94
  5. Step 5: Solve for x
    x = 1,077,616.94/1,615.16
  6. Step 6: Final answer
    x = 667.19

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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.