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Finding the Fourth Proportional to 480.66, 721.04 and 155.94

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Solution

The fourth proportional to 480.66, 721.04 and 155.94 is: 233.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.66 : 721.04 = 155.94 : x
  2. Step 2: Convert to fraction form
    480.66/721.04 = 155.94/x
  3. Step 3: Cross multiply
    480.66x = 721.04 × 155.94
  4. Step 4: Simplify right side
    480.66x = 112,438.98
  5. Step 5: Solve for x
    x = 112,438.98/480.66
  6. Step 6: Final answer
    x = 233.93

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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.