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Finding the Fourth Proportional to 365.59, 503.85 and 355.06

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Solution

The fourth proportional to 365.59, 503.85 and 355.06 is: 489.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.59 : 503.85 = 355.06 : x
  2. Step 2: Convert to fraction form
    365.59/503.85 = 355.06/x
  3. Step 3: Cross multiply
    365.59x = 503.85 × 355.06
  4. Step 4: Simplify right side
    365.59x = 178,896.98
  5. Step 5: Solve for x
    x = 178,896.98/365.59
  6. Step 6: Final answer
    x = 489.34

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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.