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Finding the Fourth Proportional to 365.46, 504.81 and 317.22

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Solution

The fourth proportional to 365.46, 504.81 and 317.22 is: 438.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.46 : 504.81 = 317.22 : x
  2. Step 2: Convert to fraction form
    365.46/504.81 = 317.22/x
  3. Step 3: Cross multiply
    365.46x = 504.81 × 317.22
  4. Step 4: Simplify right side
    365.46x = 160,135.83
  5. Step 5: Solve for x
    x = 160,135.83/365.46
  6. Step 6: Final answer
    x = 438.18

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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.