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Finding the Fourth Proportional to 1,301.36, 1,795.88 and 711.90

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Solution

The fourth proportional to 1,301.36, 1,795.88 and 711.90 is: 982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.36 : 1,795.88 = 711.90 : x
  2. Step 2: Convert to fraction form
    1,301.36/1,795.88 = 711.90/x
  3. Step 3: Cross multiply
    1,301.36x = 1,795.88 × 711.90
  4. Step 4: Simplify right side
    1,301.36x = 1,278,488.75
  5. Step 5: Solve for x
    x = 1,278,488.75/1,301.36
  6. Step 6: Final answer
    x = 982.42

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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.