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Finding the Fourth Proportional to 339.28, 505.94 and 296.08

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Solution

The fourth proportional to 339.28, 505.94 and 296.08 is: 441.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.28 : 505.94 = 296.08 : x
  2. Step 2: Convert to fraction form
    339.28/505.94 = 296.08/x
  3. Step 3: Cross multiply
    339.28x = 505.94 × 296.08
  4. Step 4: Simplify right side
    339.28x = 149,798.72
  5. Step 5: Solve for x
    x = 149,798.72/339.28
  6. Step 6: Final answer
    x = 441.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.