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Finding the Fourth Proportional to 1,016.80, 1,403.13 and 574.77

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Solution

The fourth proportional to 1,016.80, 1,403.13 and 574.77 is: 793.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.80 : 1,403.13 = 574.77 : x
  2. Step 2: Convert to fraction form
    1,016.80/1,403.13 = 574.77/x
  3. Step 3: Cross multiply
    1,016.80x = 1,403.13 × 574.77
  4. Step 4: Simplify right side
    1,016.80x = 806,477.03
  5. Step 5: Solve for x
    x = 806,477.03/1,016.80
  6. Step 6: Final answer
    x = 793.15

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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.