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Finding the Fourth Proportional to 345.46, 476.64 and 214.42

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Solution

The fourth proportional to 345.46, 476.64 and 214.42 is: 295.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.46 : 476.64 = 214.42 : x
  2. Step 2: Convert to fraction form
    345.46/476.64 = 214.42/x
  3. Step 3: Cross multiply
    345.46x = 476.64 × 214.42
  4. Step 4: Simplify right side
    345.46x = 102,201.15
  5. Step 5: Solve for x
    x = 102,201.15/345.46
  6. Step 6: Final answer
    x = 295.84

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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.