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Finding the Fourth Proportional to 448.98, 619.80 and 301.56

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Solution

The fourth proportional to 448.98, 619.80 and 301.56 is: 416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.98 : 619.80 = 301.56 : x
  2. Step 2: Convert to fraction form
    448.98/619.80 = 301.56/x
  3. Step 3: Cross multiply
    448.98x = 619.80 × 301.56
  4. Step 4: Simplify right side
    448.98x = 186,906.89
  5. Step 5: Solve for x
    x = 186,906.89/448.98
  6. Step 6: Final answer
    x = 416.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.