Home / 1,148.11-1,721.73-454.56

Finding the Fourth Proportional to 1,148.11, 1,721.73 and 454.56

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Solution

The fourth proportional to 1,148.11, 1,721.73 and 454.56 is: 681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.11 : 1,721.73 = 454.56 : x
  2. Step 2: Convert to fraction form
    1,148.11/1,721.73 = 454.56/x
  3. Step 3: Cross multiply
    1,148.11x = 1,721.73 × 454.56
  4. Step 4: Simplify right side
    1,148.11x = 782,629.59
  5. Step 5: Solve for x
    x = 782,629.59/1,148.11
  6. Step 6: Final answer
    x = 681.67

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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.