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Finding the Fourth Proportional to 445.86, 615.65 and 352.53

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Solution

The fourth proportional to 445.86, 615.65 and 352.53 is: 486.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.86 : 615.65 = 352.53 : x
  2. Step 2: Convert to fraction form
    445.86/615.65 = 352.53/x
  3. Step 3: Cross multiply
    445.86x = 615.65 × 352.53
  4. Step 4: Simplify right side
    445.86x = 217,033.33
  5. Step 5: Solve for x
    x = 217,033.33/445.86
  6. Step 6: Final answer
    x = 486.77

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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.