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Finding the Fourth Proportional to 313.18, 468.40 and 273.76

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Solution

The fourth proportional to 313.18, 468.40 and 273.76 is: 409.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.18 : 468.40 = 273.76 : x
  2. Step 2: Convert to fraction form
    313.18/468.40 = 273.76/x
  3. Step 3: Cross multiply
    313.18x = 468.40 × 273.76
  4. Step 4: Simplify right side
    313.18x = 128,229.18
  5. Step 5: Solve for x
    x = 128,229.18/313.18
  6. Step 6: Final answer
    x = 409.44

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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.