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Finding the Fourth Proportional to 1,657.13, 2,286.93 and 958.73

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Solution

The fourth proportional to 1,657.13, 2,286.93 and 958.73 is: 1,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.13 : 2,286.93 = 958.73 : x
  2. Step 2: Convert to fraction form
    1,657.13/2,286.93 = 958.73/x
  3. Step 3: Cross multiply
    1,657.13x = 2,286.93 × 958.73
  4. Step 4: Simplify right side
    1,657.13x = 2,192,548.40
  5. Step 5: Solve for x
    x = 2,192,548.40/1,657.13
  6. Step 6: Final answer
    x = 1,323.10

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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.