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Finding the Fourth Proportional to 1,707.97, 2,356.41 and 999.22

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Solution

The fourth proportional to 1,707.97, 2,356.41 and 999.22 is: 1,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.97 : 2,356.41 = 999.22 : x
  2. Step 2: Convert to fraction form
    1,707.97/2,356.41 = 999.22/x
  3. Step 3: Cross multiply
    1,707.97x = 2,356.41 × 999.22
  4. Step 4: Simplify right side
    1,707.97x = 2,354,572.00
  5. Step 5: Solve for x
    x = 2,354,572.00/1,707.97
  6. Step 6: Final answer
    x = 1,378.58

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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.