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Finding the Fourth Proportional to 319.50, 476.06 and 301.88

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Solution

The fourth proportional to 319.50, 476.06 and 301.88 is: 449.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.50 : 476.06 = 301.88 : x
  2. Step 2: Convert to fraction form
    319.50/476.06 = 301.88/x
  3. Step 3: Cross multiply
    319.50x = 476.06 × 301.88
  4. Step 4: Simplify right side
    319.50x = 143,712.99
  5. Step 5: Solve for x
    x = 143,712.99/319.50
  6. Step 6: Final answer
    x = 449.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.