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Finding the Fourth Proportional to 1,637.50, 2,456.92 and 712.58

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Solution

The fourth proportional to 1,637.50, 2,456.92 and 712.58 is: 1,069.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.50 : 2,456.92 = 712.58 : x
  2. Step 2: Convert to fraction form
    1,637.50/2,456.92 = 712.58/x
  3. Step 3: Cross multiply
    1,637.50x = 2,456.92 × 712.58
  4. Step 4: Simplify right side
    1,637.50x = 1,750,752.05
  5. Step 5: Solve for x
    x = 1,750,752.05/1,637.50
  6. Step 6: Final answer
    x = 1,069.16

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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.