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Finding the Fourth Proportional to 416.12, 623.59 and 329.07

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Solution

The fourth proportional to 416.12, 623.59 and 329.07 is: 493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.12 : 623.59 = 329.07 : x
  2. Step 2: Convert to fraction form
    416.12/623.59 = 329.07/x
  3. Step 3: Cross multiply
    416.12x = 623.59 × 329.07
  4. Step 4: Simplify right side
    416.12x = 205,204.76
  5. Step 5: Solve for x
    x = 205,204.76/416.12
  6. Step 6: Final answer
    x = 493.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.