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Finding the Fourth Proportional to 992.03, 1,368.97 and 543.92

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Solution

The fourth proportional to 992.03, 1,368.97 and 543.92 is: 750.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    992.03 : 1,368.97 = 543.92 : x
  2. Step 2: Convert to fraction form
    992.03/1,368.97 = 543.92/x
  3. Step 3: Cross multiply
    992.03x = 1,368.97 × 543.92
  4. Step 4: Simplify right side
    992.03x = 744,601.96
  5. Step 5: Solve for x
    x = 744,601.96/992.03
  6. Step 6: Final answer
    x = 750.59

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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.