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Finding the Fourth Proportional to 269.53, 403.99 and 146.05

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Solution

The fourth proportional to 269.53, 403.99 and 146.05 is: 218.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.53 : 403.99 = 146.05 : x
  2. Step 2: Convert to fraction form
    269.53/403.99 = 146.05/x
  3. Step 3: Cross multiply
    269.53x = 403.99 × 146.05
  4. Step 4: Simplify right side
    269.53x = 59,001.36
  5. Step 5: Solve for x
    x = 59,001.36/269.53
  6. Step 6: Final answer
    x = 218.91

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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.