Home / 1,176.98-1,620.53-999.56

Finding the Fourth Proportional to 1,176.98, 1,620.53 and 999.56

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Solution

The fourth proportional to 1,176.98, 1,620.53 and 999.56 is: 1,376.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.98 : 1,620.53 = 999.56 : x
  2. Step 2: Convert to fraction form
    1,176.98/1,620.53 = 999.56/x
  3. Step 3: Cross multiply
    1,176.98x = 1,620.53 × 999.56
  4. Step 4: Simplify right side
    1,176.98x = 1,619,803.87
  5. Step 5: Solve for x
    x = 1,619,803.87/1,176.98
  6. Step 6: Final answer
    x = 1,376.24

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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.