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Finding the Fourth Proportional to 1,705, 2,352.92 and 1,240.08

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Solution

The fourth proportional to 1,705, 2,352.92 and 1,240.08 is: 1,711.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705 : 2,352.92 = 1,240.08 : x
  2. Step 2: Convert to fraction form
    1,705/2,352.92 = 1,240.08/x
  3. Step 3: Cross multiply
    1,705x = 2,352.92 × 1,240.08
  4. Step 4: Simplify right side
    1,705x = 2,917,809.03
  5. Step 5: Solve for x
    x = 2,917,809.03/1,705
  6. Step 6: Final answer
    x = 1,711.32

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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.