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Finding the Fourth Proportional to 403.48, 604.72 and 230.23

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Solution

The fourth proportional to 403.48, 604.72 and 230.23 is: 345.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.48 : 604.72 = 230.23 : x
  2. Step 2: Convert to fraction form
    403.48/604.72 = 230.23/x
  3. Step 3: Cross multiply
    403.48x = 604.72 × 230.23
  4. Step 4: Simplify right side
    403.48x = 139,224.69
  5. Step 5: Solve for x
    x = 139,224.69/403.48
  6. Step 6: Final answer
    x = 345.06

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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.