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Finding the Fourth Proportional to 344.19, 475.29 and 256.71

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Solution

The fourth proportional to 344.19, 475.29 and 256.71 is: 354.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.19 : 475.29 = 256.71 : x
  2. Step 2: Convert to fraction form
    344.19/475.29 = 256.71/x
  3. Step 3: Cross multiply
    344.19x = 475.29 × 256.71
  4. Step 4: Simplify right side
    344.19x = 122,011.70
  5. Step 5: Solve for x
    x = 122,011.70/344.19
  6. Step 6: Final answer
    x = 354.49

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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.