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Finding the Fourth Proportional to 1,802.43, 2,702.61 and 705.51

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Solution

The fourth proportional to 1,802.43, 2,702.61 and 705.51 is: 1,057.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.43 : 2,702.61 = 705.51 : x
  2. Step 2: Convert to fraction form
    1,802.43/2,702.61 = 705.51/x
  3. Step 3: Cross multiply
    1,802.43x = 2,702.61 × 705.51
  4. Step 4: Simplify right side
    1,802.43x = 1,906,718.38
  5. Step 5: Solve for x
    x = 1,906,718.38/1,802.43
  6. Step 6: Final answer
    x = 1,057.86

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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.