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Finding the Fourth Proportional to 310.53, 427.56 and 263.81

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Solution

The fourth proportional to 310.53, 427.56 and 263.81 is: 363.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.53 : 427.56 = 263.81 : x
  2. Step 2: Convert to fraction form
    310.53/427.56 = 263.81/x
  3. Step 3: Cross multiply
    310.53x = 427.56 × 263.81
  4. Step 4: Simplify right side
    310.53x = 112,794.60
  5. Step 5: Solve for x
    x = 112,794.60/310.53
  6. Step 6: Final answer
    x = 363.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.