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Finding the Fourth Proportional to 310.02, 464.63 and 145.43

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Solution

The fourth proportional to 310.02, 464.63 and 145.43 is: 217.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.02 : 464.63 = 145.43 : x
  2. Step 2: Convert to fraction form
    310.02/464.63 = 145.43/x
  3. Step 3: Cross multiply
    310.02x = 464.63 × 145.43
  4. Step 4: Simplify right side
    310.02x = 67,571.14
  5. Step 5: Solve for x
    x = 67,571.14/310.02
  6. Step 6: Final answer
    x = 217.96

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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.