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Finding the Fourth Proportional to 1,301.15, 1,952.01 and 685.14

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Solution

The fourth proportional to 1,301.15, 1,952.01 and 685.14 is: 1,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.15 : 1,952.01 = 685.14 : x
  2. Step 2: Convert to fraction form
    1,301.15/1,952.01 = 685.14/x
  3. Step 3: Cross multiply
    1,301.15x = 1,952.01 × 685.14
  4. Step 4: Simplify right side
    1,301.15x = 1,337,400.13
  5. Step 5: Solve for x
    x = 1,337,400.13/1,301.15
  6. Step 6: Final answer
    x = 1,027.86

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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.