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Finding the Fourth Proportional to 343.05, 472.95 and 253.27

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Solution

The fourth proportional to 343.05, 472.95 and 253.27 is: 349.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.05 : 472.95 = 253.27 : x
  2. Step 2: Convert to fraction form
    343.05/472.95 = 253.27/x
  3. Step 3: Cross multiply
    343.05x = 472.95 × 253.27
  4. Step 4: Simplify right side
    343.05x = 119,784.05
  5. Step 5: Solve for x
    x = 119,784.05/343.05
  6. Step 6: Final answer
    x = 349.17

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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.