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Finding the Fourth Proportional to 1,274.82, 1,759.19 and 802.82

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Solution

The fourth proportional to 1,274.82, 1,759.19 and 802.82 is: 1,107.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274.82 : 1,759.19 = 802.82 : x
  2. Step 2: Convert to fraction form
    1,274.82/1,759.19 = 802.82/x
  3. Step 3: Cross multiply
    1,274.82x = 1,759.19 × 802.82
  4. Step 4: Simplify right side
    1,274.82x = 1,412,300.11
  5. Step 5: Solve for x
    x = 1,412,300.11/1,274.82
  6. Step 6: Final answer
    x = 1,107.84

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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.