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Finding the Fourth Proportional to 836.51, 1,150.65 and 802.80

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Solution

The fourth proportional to 836.51, 1,150.65 and 802.80 is: 1,104.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.51 : 1,150.65 = 802.80 : x
  2. Step 2: Convert to fraction form
    836.51/1,150.65 = 802.80/x
  3. Step 3: Cross multiply
    836.51x = 1,150.65 × 802.80
  4. Step 4: Simplify right side
    836.51x = 923,741.82
  5. Step 5: Solve for x
    x = 923,741.82/836.51
  6. Step 6: Final answer
    x = 1,104.29

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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.