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Finding the Fourth Proportional to 443.86, 615.11 and 435.22

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Solution

The fourth proportional to 443.86, 615.11 and 435.22 is: 603.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.86 : 615.11 = 435.22 : x
  2. Step 2: Convert to fraction form
    443.86/615.11 = 435.22/x
  3. Step 3: Cross multiply
    443.86x = 615.11 × 435.22
  4. Step 4: Simplify right side
    443.86x = 267,708.17
  5. Step 5: Solve for x
    x = 267,708.17/443.86
  6. Step 6: Final answer
    x = 603.14

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.