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Finding the Fourth Proportional to 446.76, 615.70 and 322.21

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Solution

The fourth proportional to 446.76, 615.70 and 322.21 is: 444.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.76 : 615.70 = 322.21 : x
  2. Step 2: Convert to fraction form
    446.76/615.70 = 322.21/x
  3. Step 3: Cross multiply
    446.76x = 615.70 × 322.21
  4. Step 4: Simplify right side
    446.76x = 198,383.89
  5. Step 5: Solve for x
    x = 198,383.89/446.76
  6. Step 6: Final answer
    x = 444.05

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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.