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Finding the Fourth Proportional to 1,634, 2,451.54 and 659.57

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Solution

The fourth proportional to 1,634, 2,451.54 and 659.57 is: 989.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634 : 2,451.54 = 659.57 : x
  2. Step 2: Convert to fraction form
    1,634/2,451.54 = 659.57/x
  3. Step 3: Cross multiply
    1,634x = 2,451.54 × 659.57
  4. Step 4: Simplify right side
    1,634x = 1,616,962.24
  5. Step 5: Solve for x
    x = 1,616,962.24/1,634
  6. Step 6: Final answer
    x = 989.57

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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.