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Finding the Fourth Proportional to 345.30, 476.60 and 214.22

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Solution

The fourth proportional to 345.30, 476.60 and 214.22 is: 295.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.30 : 476.60 = 214.22 : x
  2. Step 2: Convert to fraction form
    345.30/476.60 = 214.22/x
  3. Step 3: Cross multiply
    345.30x = 476.60 × 214.22
  4. Step 4: Simplify right side
    345.30x = 102,097.25
  5. Step 5: Solve for x
    x = 102,097.25/345.30
  6. Step 6: Final answer
    x = 295.68

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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.