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Finding the Fourth Proportional to 357.63, 492.94 and 326.65

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Solution

The fourth proportional to 357.63, 492.94 and 326.65 is: 450.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.63 : 492.94 = 326.65 : x
  2. Step 2: Convert to fraction form
    357.63/492.94 = 326.65/x
  3. Step 3: Cross multiply
    357.63x = 492.94 × 326.65
  4. Step 4: Simplify right side
    357.63x = 161,018.85
  5. Step 5: Solve for x
    x = 161,018.85/357.63
  6. Step 6: Final answer
    x = 450.24

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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.