Home / 1,448.40-2,172.38-474.50

Finding the Fourth Proportional to 1,448.40, 2,172.38 and 474.50

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Solution

The fourth proportional to 1,448.40, 2,172.38 and 474.50 is: 711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.40 : 2,172.38 = 474.50 : x
  2. Step 2: Convert to fraction form
    1,448.40/2,172.38 = 474.50/x
  3. Step 3: Cross multiply
    1,448.40x = 2,172.38 × 474.50
  4. Step 4: Simplify right side
    1,448.40x = 1,030,794.31
  5. Step 5: Solve for x
    x = 1,030,794.31/1,448.40
  6. Step 6: Final answer
    x = 711.68

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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.