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Finding the Fourth Proportional to 344.79, 475.20 and 304.56

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Solution

The fourth proportional to 344.79, 475.20 and 304.56 is: 419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.79 : 475.20 = 304.56 : x
  2. Step 2: Convert to fraction form
    344.79/475.20 = 304.56/x
  3. Step 3: Cross multiply
    344.79x = 475.20 × 304.56
  4. Step 4: Simplify right side
    344.79x = 144,726.91
  5. Step 5: Solve for x
    x = 144,726.91/344.79
  6. Step 6: Final answer
    x = 419.75

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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.