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Finding the Fourth Proportional to 403.27, 603.56 and 354.49

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Solution

The fourth proportional to 403.27, 603.56 and 354.49 is: 530.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.27 : 603.56 = 354.49 : x
  2. Step 2: Convert to fraction form
    403.27/603.56 = 354.49/x
  3. Step 3: Cross multiply
    403.27x = 603.56 × 354.49
  4. Step 4: Simplify right side
    403.27x = 213,954.21
  5. Step 5: Solve for x
    x = 213,954.21/403.27
  6. Step 6: Final answer
    x = 530.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.