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Finding the Fourth Proportional to 319, 479.16 and 300.50

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Solution

The fourth proportional to 319, 479.16 and 300.50 is: 451.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    319 : 479.16 = 300.50 : x
  2. Step 2: Convert to fraction form
    319/479.16 = 300.50/x
  3. Step 3: Cross multiply
    319x = 479.16 × 300.50
  4. Step 4: Simplify right side
    319x = 143,987.58
  5. Step 5: Solve for x
    x = 143,987.58/319
  6. Step 6: Final answer
    x = 451.37

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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.