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Finding the Fourth Proportional to 477.11, 715.66 and 168.79

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Solution

The fourth proportional to 477.11, 715.66 and 168.79 is: 253.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.11 : 715.66 = 168.79 : x
  2. Step 2: Convert to fraction form
    477.11/715.66 = 168.79/x
  3. Step 3: Cross multiply
    477.11x = 715.66 × 168.79
  4. Step 4: Simplify right side
    477.11x = 120,796.25
  5. Step 5: Solve for x
    x = 120,796.25/477.11
  6. Step 6: Final answer
    x = 253.19

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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.