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Finding the Fourth Proportional to 1,448.53, 2,171.40 and 955.31

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Solution

The fourth proportional to 1,448.53, 2,171.40 and 955.31 is: 1,432.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.53 : 2,171.40 = 955.31 : x
  2. Step 2: Convert to fraction form
    1,448.53/2,171.40 = 955.31/x
  3. Step 3: Cross multiply
    1,448.53x = 2,171.40 × 955.31
  4. Step 4: Simplify right side
    1,448.53x = 2,074,349.93
  5. Step 5: Solve for x
    x = 2,074,349.93/1,448.53
  6. Step 6: Final answer
    x = 1,432.04

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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.