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Finding the Fourth Proportional to 1,707.23, 2,560.52 and 782.81

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Solution

The fourth proportional to 1,707.23, 2,560.52 and 782.81 is: 1,174.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.23 : 2,560.52 = 782.81 : x
  2. Step 2: Convert to fraction form
    1,707.23/2,560.52 = 782.81/x
  3. Step 3: Cross multiply
    1,707.23x = 2,560.52 × 782.81
  4. Step 4: Simplify right side
    1,707.23x = 2,004,383.94
  5. Step 5: Solve for x
    x = 2,004,383.94/1,707.23
  6. Step 6: Final answer
    x = 1,174.06

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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.