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Finding the Fourth Proportional to 428.76, 592 and 273.76

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Solution

The fourth proportional to 428.76, 592 and 273.76 is: 377.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    428.76 : 592 = 273.76 : x
  2. Step 2: Convert to fraction form
    428.76/592 = 273.76/x
  3. Step 3: Cross multiply
    428.76x = 592 × 273.76
  4. Step 4: Simplify right side
    428.76x = 162,065.92
  5. Step 5: Solve for x
    x = 162,065.92/428.76
  6. Step 6: Final answer
    x = 377.99

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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.