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Finding the Fourth Proportional to 446.10, 615.49 and 347.86

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Solution

The fourth proportional to 446.10, 615.49 and 347.86 is: 479.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.10 : 615.49 = 347.86 : x
  2. Step 2: Convert to fraction form
    446.10/615.49 = 347.86/x
  3. Step 3: Cross multiply
    446.10x = 615.49 × 347.86
  4. Step 4: Simplify right side
    446.10x = 214,104.35
  5. Step 5: Solve for x
    x = 214,104.35/446.10
  6. Step 6: Final answer
    x = 479.95

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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.