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Finding the Fourth Proportional to 336.79, 464.28 and 289.96

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Solution

The fourth proportional to 336.79, 464.28 and 289.96 is: 399.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.79 : 464.28 = 289.96 : x
  2. Step 2: Convert to fraction form
    336.79/464.28 = 289.96/x
  3. Step 3: Cross multiply
    336.79x = 464.28 × 289.96
  4. Step 4: Simplify right side
    336.79x = 134,622.63
  5. Step 5: Solve for x
    x = 134,622.63/336.79
  6. Step 6: Final answer
    x = 399.72

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