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Finding the Fourth Proportional to 400.03, 552.43 and 330.32

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Solution

The fourth proportional to 400.03, 552.43 and 330.32 is: 456.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.03 : 552.43 = 330.32 : x
  2. Step 2: Convert to fraction form
    400.03/552.43 = 330.32/x
  3. Step 3: Cross multiply
    400.03x = 552.43 × 330.32
  4. Step 4: Simplify right side
    400.03x = 182,475.92
  5. Step 5: Solve for x
    x = 182,475.92/400.03
  6. Step 6: Final answer
    x = 456.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.