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Finding the Fourth Proportional to 445.68, 615.60 and 348.66

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Solution

The fourth proportional to 445.68, 615.60 and 348.66 is: 481.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.68 : 615.60 = 348.66 : x
  2. Step 2: Convert to fraction form
    445.68/615.60 = 348.66/x
  3. Step 3: Cross multiply
    445.68x = 615.60 × 348.66
  4. Step 4: Simplify right side
    445.68x = 214,635.10
  5. Step 5: Solve for x
    x = 214,635.10/445.68
  6. Step 6: Final answer
    x = 481.59

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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.