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Finding the Fourth Proportional to 577.46, 860.44 and 549.56

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Solution

The fourth proportional to 577.46, 860.44 and 549.56 is: 818.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.46 : 860.44 = 549.56 : x
  2. Step 2: Convert to fraction form
    577.46/860.44 = 549.56/x
  3. Step 3: Cross multiply
    577.46x = 860.44 × 549.56
  4. Step 4: Simplify right side
    577.46x = 472,863.41
  5. Step 5: Solve for x
    x = 472,863.41/577.46
  6. Step 6: Final answer
    x = 818.87

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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.