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Finding the Fourth Proportional to 365.65, 504.07 and 321.58

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Solution

The fourth proportional to 365.65, 504.07 and 321.58 is: 443.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.65 : 504.07 = 321.58 : x
  2. Step 2: Convert to fraction form
    365.65/504.07 = 321.58/x
  3. Step 3: Cross multiply
    365.65x = 504.07 × 321.58
  4. Step 4: Simplify right side
    365.65x = 162,098.83
  5. Step 5: Solve for x
    x = 162,098.83/365.65
  6. Step 6: Final answer
    x = 443.32

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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.