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Finding the Fourth Proportional to 1,628.32, 2,443.48 and 654.50

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Solution

The fourth proportional to 1,628.32, 2,443.48 and 654.50 is: 982.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.32 : 2,443.48 = 654.50 : x
  2. Step 2: Convert to fraction form
    1,628.32/2,443.48 = 654.50/x
  3. Step 3: Cross multiply
    1,628.32x = 2,443.48 × 654.50
  4. Step 4: Simplify right side
    1,628.32x = 1,599,257.66
  5. Step 5: Solve for x
    x = 1,599,257.66/1,628.32
  6. Step 6: Final answer
    x = 982.15

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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.