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Finding the Fourth Proportional to 269.48, 404.02 and 147.64

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Solution

The fourth proportional to 269.48, 404.02 and 147.64 is: 221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.48 : 404.02 = 147.64 : x
  2. Step 2: Convert to fraction form
    269.48/404.02 = 147.64/x
  3. Step 3: Cross multiply
    269.48x = 404.02 × 147.64
  4. Step 4: Simplify right side
    269.48x = 59,649.51
  5. Step 5: Solve for x
    x = 59,649.51/269.48
  6. Step 6: Final answer
    x = 221.35

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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.