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Finding the Fourth Proportional to 1,055.97, 1,449.23 and 957.56

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Solution

The fourth proportional to 1,055.97, 1,449.23 and 957.56 is: 1,314.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.97 : 1,449.23 = 957.56 : x
  2. Step 2: Convert to fraction form
    1,055.97/1,449.23 = 957.56/x
  3. Step 3: Cross multiply
    1,055.97x = 1,449.23 × 957.56
  4. Step 4: Simplify right side
    1,055.97x = 1,387,712.64
  5. Step 5: Solve for x
    x = 1,387,712.64/1,055.97
  6. Step 6: Final answer
    x = 1,314.16

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.