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Finding the Fourth Proportional to 1,016.92, 1,403.34 and 551.16

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Solution

The fourth proportional to 1,016.92, 1,403.34 and 551.16 is: 760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,016.92 : 1,403.34 = 551.16 : x
  2. Step 2: Convert to fraction form
    1,016.92/1,403.34 = 551.16/x
  3. Step 3: Cross multiply
    1,016.92x = 1,403.34 × 551.16
  4. Step 4: Simplify right side
    1,016.92x = 773,464.87
  5. Step 5: Solve for x
    x = 773,464.87/1,016.92
  6. Step 6: Final answer
    x = 760.60

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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.