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Finding the Fourth Proportional to 555.08, 762.10 and 540.80

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Solution

The fourth proportional to 555.08, 762.10 and 540.80 is: 742.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.08 : 762.10 = 540.80 : x
  2. Step 2: Convert to fraction form
    555.08/762.10 = 540.80/x
  3. Step 3: Cross multiply
    555.08x = 762.10 × 540.80
  4. Step 4: Simplify right side
    555.08x = 412,143.68
  5. Step 5: Solve for x
    x = 412,143.68/555.08
  6. Step 6: Final answer
    x = 742.49

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.