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Finding the Fourth Proportional to 555.60, 772.05 and 549.96

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Solution

The fourth proportional to 555.60, 772.05 and 549.96 is: 764.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.60 : 772.05 = 549.96 : x
  2. Step 2: Convert to fraction form
    555.60/772.05 = 549.96/x
  3. Step 3: Cross multiply
    555.60x = 772.05 × 549.96
  4. Step 4: Simplify right side
    555.60x = 424,596.62
  5. Step 5: Solve for x
    x = 424,596.62/555.60
  6. Step 6: Final answer
    x = 764.21

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.