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Finding the Fourth Proportional to 640.01, 958.31 and 365.73

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Solution

The fourth proportional to 640.01, 958.31 and 365.73 is: 547.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.01 : 958.31 = 365.73 : x
  2. Step 2: Convert to fraction form
    640.01/958.31 = 365.73/x
  3. Step 3: Cross multiply
    640.01x = 958.31 × 365.73
  4. Step 4: Simplify right side
    640.01x = 350,482.72
  5. Step 5: Solve for x
    x = 350,482.72/640.01
  6. Step 6: Final answer
    x = 547.62

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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.