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Finding the Fourth Proportional to 1,751.47, 2,626.28 and 518.71

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Solution

The fourth proportional to 1,751.47, 2,626.28 and 518.71 is: 777.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.47 : 2,626.28 = 518.71 : x
  2. Step 2: Convert to fraction form
    1,751.47/2,626.28 = 518.71/x
  3. Step 3: Cross multiply
    1,751.47x = 2,626.28 × 518.71
  4. Step 4: Simplify right side
    1,751.47x = 1,362,275.11
  5. Step 5: Solve for x
    x = 1,362,275.11/1,751.47
  6. Step 6: Final answer
    x = 777.79

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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.