Home / 1,451.19-2,176.79-355.56

Finding the Fourth Proportional to 1,451.19, 2,176.79 and 355.56

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Solution

The fourth proportional to 1,451.19, 2,176.79 and 355.56 is: 533.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.19 : 2,176.79 = 355.56 : x
  2. Step 2: Convert to fraction form
    1,451.19/2,176.79 = 355.56/x
  3. Step 3: Cross multiply
    1,451.19x = 2,176.79 × 355.56
  4. Step 4: Simplify right side
    1,451.19x = 773,979.45
  5. Step 5: Solve for x
    x = 773,979.45/1,451.19
  6. Step 6: Final answer
    x = 533.34

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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.