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Finding the Fourth Proportional to 986.18, 1,360.94 and 544.11

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Solution

The fourth proportional to 986.18, 1,360.94 and 544.11 is: 750.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.18 : 1,360.94 = 544.11 : x
  2. Step 2: Convert to fraction form
    986.18/1,360.94 = 544.11/x
  3. Step 3: Cross multiply
    986.18x = 1,360.94 × 544.11
  4. Step 4: Simplify right side
    986.18x = 740,501.06
  5. Step 5: Solve for x
    x = 740,501.06/986.18
  6. Step 6: Final answer
    x = 750.88

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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.