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Finding the Fourth Proportional to 1,257.26, 1,734.63 and 733.10

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Solution

The fourth proportional to 1,257.26, 1,734.63 and 733.10 is: 1,011.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.26 : 1,734.63 = 733.10 : x
  2. Step 2: Convert to fraction form
    1,257.26/1,734.63 = 733.10/x
  3. Step 3: Cross multiply
    1,257.26x = 1,734.63 × 733.10
  4. Step 4: Simplify right side
    1,257.26x = 1,271,657.25
  5. Step 5: Solve for x
    x = 1,271,657.25/1,257.26
  6. Step 6: Final answer
    x = 1,011.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.