Home / 1,376.11-2,062.55-553.29

Finding the Fourth Proportional to 1,376.11, 2,062.55 and 553.29

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Solution

The fourth proportional to 1,376.11, 2,062.55 and 553.29 is: 829.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.11 : 2,062.55 = 553.29 : x
  2. Step 2: Convert to fraction form
    1,376.11/2,062.55 = 553.29/x
  3. Step 3: Cross multiply
    1,376.11x = 2,062.55 × 553.29
  4. Step 4: Simplify right side
    1,376.11x = 1,141,178.83
  5. Step 5: Solve for x
    x = 1,141,178.83/1,376.11
  6. Step 6: Final answer
    x = 829.28

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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.