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Finding the Fourth Proportional to 1,173.33, 1,616.40 and 953.73

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Solution

The fourth proportional to 1,173.33, 1,616.40 and 953.73 is: 1,313.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.33 : 1,616.40 = 953.73 : x
  2. Step 2: Convert to fraction form
    1,173.33/1,616.40 = 953.73/x
  3. Step 3: Cross multiply
    1,173.33x = 1,616.40 × 953.73
  4. Step 4: Simplify right side
    1,173.33x = 1,541,609.17
  5. Step 5: Solve for x
    x = 1,541,609.17/1,173.33
  6. Step 6: Final answer
    x = 1,313.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.