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Finding the Fourth Proportional to 365.40, 503.03 and 330.32

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Solution

The fourth proportional to 365.40, 503.03 and 330.32 is: 454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.40 : 503.03 = 330.32 : x
  2. Step 2: Convert to fraction form
    365.40/503.03 = 330.32/x
  3. Step 3: Cross multiply
    365.40x = 503.03 × 330.32
  4. Step 4: Simplify right side
    365.40x = 166,160.48
  5. Step 5: Solve for x
    x = 166,160.48/365.40
  6. Step 6: Final answer
    x = 454.74

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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.