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Finding the Fourth Proportional to 541.44, 815.06 and 491.15

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Solution

The fourth proportional to 541.44, 815.06 and 491.15 is: 739.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.44 : 815.06 = 491.15 : x
  2. Step 2: Convert to fraction form
    541.44/815.06 = 491.15/x
  3. Step 3: Cross multiply
    541.44x = 815.06 × 491.15
  4. Step 4: Simplify right side
    541.44x = 400,310.19
  5. Step 5: Solve for x
    x = 400,310.19/541.44
  6. Step 6: Final answer
    x = 739.34

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.