Home / 1,455.09-2,182.64-415.11

Finding the Fourth Proportional to 1,455.09, 2,182.64 and 415.11

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Solution

The fourth proportional to 1,455.09, 2,182.64 and 415.11 is: 622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.09 : 2,182.64 = 415.11 : x
  2. Step 2: Convert to fraction form
    1,455.09/2,182.64 = 415.11/x
  3. Step 3: Cross multiply
    1,455.09x = 2,182.64 × 415.11
  4. Step 4: Simplify right side
    1,455.09x = 906,035.69
  5. Step 5: Solve for x
    x = 906,035.69/1,455.09
  6. Step 6: Final answer
    x = 622.67

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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.