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Finding the Fourth Proportional to 300.66, 448.64 and 290.22

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Solution

The fourth proportional to 300.66, 448.64 and 290.22 is: 433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.66 : 448.64 = 290.22 : x
  2. Step 2: Convert to fraction form
    300.66/448.64 = 290.22/x
  3. Step 3: Cross multiply
    300.66x = 448.64 × 290.22
  4. Step 4: Simplify right side
    300.66x = 130,202.85
  5. Step 5: Solve for x
    x = 130,202.85/300.66
  6. Step 6: Final answer
    x = 433.06

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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.