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Finding the Fourth Proportional to 549.72, 818.91 and 540.54

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Solution

The fourth proportional to 549.72, 818.91 and 540.54 is: 805.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.72 : 818.91 = 540.54 : x
  2. Step 2: Convert to fraction form
    549.72/818.91 = 540.54/x
  3. Step 3: Cross multiply
    549.72x = 818.91 × 540.54
  4. Step 4: Simplify right side
    549.72x = 442,653.61
  5. Step 5: Solve for x
    x = 442,653.61/549.72
  6. Step 6: Final answer
    x = 805.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.