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Finding the Fourth Proportional to 1,616.45, 2,425.10 and 462.20

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Solution

The fourth proportional to 1,616.45, 2,425.10 and 462.20 is: 693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.45 : 2,425.10 = 462.20 : x
  2. Step 2: Convert to fraction form
    1,616.45/2,425.10 = 462.20/x
  3. Step 3: Cross multiply
    1,616.45x = 2,425.10 × 462.20
  4. Step 4: Simplify right side
    1,616.45x = 1,120,866.78
  5. Step 5: Solve for x
    x = 1,120,866.78/1,616.45
  6. Step 6: Final answer
    x = 693.41

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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.