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Finding the Fourth Proportional to 627.23, 939.62 and 540.05

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Solution

The fourth proportional to 627.23, 939.62 and 540.05 is: 809.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.23 : 939.62 = 540.05 : x
  2. Step 2: Convert to fraction form
    627.23/939.62 = 540.05/x
  3. Step 3: Cross multiply
    627.23x = 939.62 × 540.05
  4. Step 4: Simplify right side
    627.23x = 507,434.38
  5. Step 5: Solve for x
    x = 507,434.38/627.23
  6. Step 6: Final answer
    x = 809.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.