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Finding the Fourth Proportional to 477.91, 716.94 and 153.21

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Solution

The fourth proportional to 477.91, 716.94 and 153.21 is: 229.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.91 : 716.94 = 153.21 : x
  2. Step 2: Convert to fraction form
    477.91/716.94 = 153.21/x
  3. Step 3: Cross multiply
    477.91x = 716.94 × 153.21
  4. Step 4: Simplify right side
    477.91x = 109,842.38
  5. Step 5: Solve for x
    x = 109,842.38/477.91
  6. Step 6: Final answer
    x = 229.84

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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.