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Finding the Fourth Proportional to 787.36, 1,175.77 and 741.80

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Solution

The fourth proportional to 787.36, 1,175.77 and 741.80 is: 1,107.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    787.36 : 1,175.77 = 741.80 : x
  2. Step 2: Convert to fraction form
    787.36/1,175.77 = 741.80/x
  3. Step 3: Cross multiply
    787.36x = 1,175.77 × 741.80
  4. Step 4: Simplify right side
    787.36x = 872,186.19
  5. Step 5: Solve for x
    x = 872,186.19/787.36
  6. Step 6: Final answer
    x = 1,107.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.