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Finding the Fourth Proportional to 1,070.83, 1,477.33 and 791.74

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Solution

The fourth proportional to 1,070.83, 1,477.33 and 791.74 is: 1,092.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.83 : 1,477.33 = 791.74 : x
  2. Step 2: Convert to fraction form
    1,070.83/1,477.33 = 791.74/x
  3. Step 3: Cross multiply
    1,070.83x = 1,477.33 × 791.74
  4. Step 4: Simplify right side
    1,070.83x = 1,169,661.25
  5. Step 5: Solve for x
    x = 1,169,661.25/1,070.83
  6. Step 6: Final answer
    x = 1,092.29

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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.