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Finding the Fourth Proportional to 1,713.99, 2,570.78 and 481.51

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Solution

The fourth proportional to 1,713.99, 2,570.78 and 481.51 is: 722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,713.99 : 2,570.78 = 481.51 : x
  2. Step 2: Convert to fraction form
    1,713.99/2,570.78 = 481.51/x
  3. Step 3: Cross multiply
    1,713.99x = 2,570.78 × 481.51
  4. Step 4: Simplify right side
    1,713.99x = 1,237,847.14
  5. Step 5: Solve for x
    x = 1,237,847.14/1,713.99
  6. Step 6: Final answer
    x = 722.20

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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.