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Finding the Fourth Proportional to 428.96, 592.08 and 254.32

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Solution

The fourth proportional to 428.96, 592.08 and 254.32 is: 351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    428.96 : 592.08 = 254.32 : x
  2. Step 2: Convert to fraction form
    428.96/592.08 = 254.32/x
  3. Step 3: Cross multiply
    428.96x = 592.08 × 254.32
  4. Step 4: Simplify right side
    428.96x = 150,577.79
  5. Step 5: Solve for x
    x = 150,577.79/428.96
  6. Step 6: Final answer
    x = 351.03

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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.