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Finding the Fourth Proportional to 1,448.65, 2,172.05 and 954.48

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Solution

The fourth proportional to 1,448.65, 2,172.05 and 954.48 is: 1,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.65 : 2,172.05 = 954.48 : x
  2. Step 2: Convert to fraction form
    1,448.65/2,172.05 = 954.48/x
  3. Step 3: Cross multiply
    1,448.65x = 2,172.05 × 954.48
  4. Step 4: Simplify right side
    1,448.65x = 2,073,185.24
  5. Step 5: Solve for x
    x = 2,073,185.24/1,448.65
  6. Step 6: Final answer
    x = 1,431.11

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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.