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Finding the Fourth Proportional to 403.02, 555.03 and 329.10

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Solution

The fourth proportional to 403.02, 555.03 and 329.10 is: 453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.02 : 555.03 = 329.10 : x
  2. Step 2: Convert to fraction form
    403.02/555.03 = 329.10/x
  3. Step 3: Cross multiply
    403.02x = 555.03 × 329.10
  4. Step 4: Simplify right side
    403.02x = 182,660.37
  5. Step 5: Solve for x
    x = 182,660.37/403.02
  6. Step 6: Final answer
    x = 453.23

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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.