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Finding the Fourth Proportional to 365.04, 503.19 and 306

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Solution

The fourth proportional to 365.04, 503.19 and 306 is: 421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.04 : 503.19 = 306 : x
  2. Step 2: Convert to fraction form
    365.04/503.19 = 306/x
  3. Step 3: Cross multiply
    365.04x = 503.19 × 306
  4. Step 4: Simplify right side
    365.04x = 153,976.14
  5. Step 5: Solve for x
    x = 153,976.14/365.04
  6. Step 6: Final answer
    x = 421.81

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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.