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Finding the Fourth Proportional to 320.40, 480.44 and 176

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Solution

The fourth proportional to 320.40, 480.44 and 176 is: 263.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.40 : 480.44 = 176 : x
  2. Step 2: Convert to fraction form
    320.40/480.44 = 176/x
  3. Step 3: Cross multiply
    320.40x = 480.44 × 176
  4. Step 4: Simplify right side
    320.40x = 84,557.44
  5. Step 5: Solve for x
    x = 84,557.44/320.40
  6. Step 6: Final answer
    x = 263.91

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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.