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Finding the Fourth Proportional to 1,625.43, 2,439.41 and 652.17

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Solution

The fourth proportional to 1,625.43, 2,439.41 and 652.17 is: 978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.43 : 2,439.41 = 652.17 : x
  2. Step 2: Convert to fraction form
    1,625.43/2,439.41 = 652.17/x
  3. Step 3: Cross multiply
    1,625.43x = 2,439.41 × 652.17
  4. Step 4: Simplify right side
    1,625.43x = 1,590,910.02
  5. Step 5: Solve for x
    x = 1,590,910.02/1,625.43
  6. Step 6: Final answer
    x = 978.76

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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.