Home / 1,455.14-2,182.16-480.72

Finding the Fourth Proportional to 1,455.14, 2,182.16 and 480.72

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Solution

The fourth proportional to 1,455.14, 2,182.16 and 480.72 is: 720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.14 : 2,182.16 = 480.72 : x
  2. Step 2: Convert to fraction form
    1,455.14/2,182.16 = 480.72/x
  3. Step 3: Cross multiply
    1,455.14x = 2,182.16 × 480.72
  4. Step 4: Simplify right side
    1,455.14x = 1,049,007.96
  5. Step 5: Solve for x
    x = 1,049,007.96/1,455.14
  6. Step 6: Final answer
    x = 720.90

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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.