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Finding the Fourth Proportional to 1,448.38, 2,172.36 and 474.52

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Solution

The fourth proportional to 1,448.38, 2,172.36 and 474.52 is: 711.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.38 : 2,172.36 = 474.52 : x
  2. Step 2: Convert to fraction form
    1,448.38/2,172.36 = 474.52/x
  3. Step 3: Cross multiply
    1,448.38x = 2,172.36 × 474.52
  4. Step 4: Simplify right side
    1,448.38x = 1,030,828.27
  5. Step 5: Solve for x
    x = 1,030,828.27/1,448.38
  6. Step 6: Final answer
    x = 711.71

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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.