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Finding the Fourth Proportional to 403.28, 603.48 and 376.16

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Solution

The fourth proportional to 403.28, 603.48 and 376.16 is: 562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.28 : 603.48 = 376.16 : x
  2. Step 2: Convert to fraction form
    403.28/603.48 = 376.16/x
  3. Step 3: Cross multiply
    403.28x = 603.48 × 376.16
  4. Step 4: Simplify right side
    403.28x = 227,005.04
  5. Step 5: Solve for x
    x = 227,005.04/403.28
  6. Step 6: Final answer
    x = 562.90

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