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Finding the Fourth Proportional to 263.02, 393.99 and 154.30

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Solution

The fourth proportional to 263.02, 393.99 and 154.30 is: 231.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.02 : 393.99 = 154.30 : x
  2. Step 2: Convert to fraction form
    263.02/393.99 = 154.30/x
  3. Step 3: Cross multiply
    263.02x = 393.99 × 154.30
  4. Step 4: Simplify right side
    263.02x = 60,792.66
  5. Step 5: Solve for x
    x = 60,792.66/263.02
  6. Step 6: Final answer
    x = 231.13

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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.