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Finding the Fourth Proportional to 345.26, 476.79 and 214.31

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Solution

The fourth proportional to 345.26, 476.79 and 214.31 is: 295.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.26 : 476.79 = 214.31 : x
  2. Step 2: Convert to fraction form
    345.26/476.79 = 214.31/x
  3. Step 3: Cross multiply
    345.26x = 476.79 × 214.31
  4. Step 4: Simplify right side
    345.26x = 102,180.86
  5. Step 5: Solve for x
    x = 102,180.86/345.26
  6. Step 6: Final answer
    x = 295.95

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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.