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Finding the Fourth Proportional to 477.66, 716.76 and 323.94

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Solution

The fourth proportional to 477.66, 716.76 and 323.94 is: 486.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.66 : 716.76 = 323.94 : x
  2. Step 2: Convert to fraction form
    477.66/716.76 = 323.94/x
  3. Step 3: Cross multiply
    477.66x = 716.76 × 323.94
  4. Step 4: Simplify right side
    477.66x = 232,187.23
  5. Step 5: Solve for x
    x = 232,187.23/477.66
  6. Step 6: Final answer
    x = 486.09

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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.