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Finding the Fourth Proportional to 319.94, 480.05 and 307.52

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Solution

The fourth proportional to 319.94, 480.05 and 307.52 is: 461.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.94 : 480.05 = 307.52 : x
  2. Step 2: Convert to fraction form
    319.94/480.05 = 307.52/x
  3. Step 3: Cross multiply
    319.94x = 480.05 × 307.52
  4. Step 4: Simplify right side
    319.94x = 147,624.98
  5. Step 5: Solve for x
    x = 147,624.98/319.94
  6. Step 6: Final answer
    x = 461.41

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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.