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Finding the Fourth Proportional to 300.88, 448.78 and 291.77

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Solution

The fourth proportional to 300.88, 448.78 and 291.77 is: 435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.88 : 448.78 = 291.77 : x
  2. Step 2: Convert to fraction form
    300.88/448.78 = 291.77/x
  3. Step 3: Cross multiply
    300.88x = 448.78 × 291.77
  4. Step 4: Simplify right side
    300.88x = 130,940.54
  5. Step 5: Solve for x
    x = 130,940.54/300.88
  6. Step 6: Final answer
    x = 435.19

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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.