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Finding the Fourth Proportional to 403.20, 603.36 and 373.44

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Solution

The fourth proportional to 403.20, 603.36 and 373.44 is: 558.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.20 : 603.36 = 373.44 : x
  2. Step 2: Convert to fraction form
    403.20/603.36 = 373.44/x
  3. Step 3: Cross multiply
    403.20x = 603.36 × 373.44
  4. Step 4: Simplify right side
    403.20x = 225,318.76
  5. Step 5: Solve for x
    x = 225,318.76/403.20
  6. Step 6: Final answer
    x = 558.83

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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.