Home / 1,455.05-2,182.25-415.04

Finding the Fourth Proportional to 1,455.05, 2,182.25 and 415.04

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Solution

The fourth proportional to 1,455.05, 2,182.25 and 415.04 is: 622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.05 : 2,182.25 = 415.04 : x
  2. Step 2: Convert to fraction form
    1,455.05/2,182.25 = 415.04/x
  3. Step 3: Cross multiply
    1,455.05x = 2,182.25 × 415.04
  4. Step 4: Simplify right side
    1,455.05x = 905,708.05
  5. Step 5: Solve for x
    x = 905,708.05/1,455.05
  6. Step 6: Final answer
    x = 622.46

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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.