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Finding the Fourth Proportional to 336.87, 464.45 and 290.07

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Solution

The fourth proportional to 336.87, 464.45 and 290.07 is: 399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.87 : 464.45 = 290.07 : x
  2. Step 2: Convert to fraction form
    336.87/464.45 = 290.07/x
  3. Step 3: Cross multiply
    336.87x = 464.45 × 290.07
  4. Step 4: Simplify right side
    336.87x = 134,721.56
  5. Step 5: Solve for x
    x = 134,721.56/336.87
  6. Step 6: Final answer
    x = 399.92

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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.