Home / 1,143.36-1,577.00-723.78

Finding the Fourth Proportional to 1,143.36, 1,577.00 and 723.78

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Solution

The fourth proportional to 1,143.36, 1,577.00 and 723.78 is: 998.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.36 : 1,577.00 = 723.78 : x
  2. Step 2: Convert to fraction form
    1,143.36/1,577.00 = 723.78/x
  3. Step 3: Cross multiply
    1,143.36x = 1,577.00 × 723.78
  4. Step 4: Simplify right side
    1,143.36x = 1,141,402.87
  5. Step 5: Solve for x
    x = 1,141,402.87/1,143.36
  6. Step 6: Final answer
    x = 998.29

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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.