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Finding the Fourth Proportional to 263.12, 393.46 and 240.03

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Solution

The fourth proportional to 263.12, 393.46 and 240.03 is: 358.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.12 : 393.46 = 240.03 : x
  2. Step 2: Convert to fraction form
    263.12/393.46 = 240.03/x
  3. Step 3: Cross multiply
    263.12x = 393.46 × 240.03
  4. Step 4: Simplify right side
    263.12x = 94,441.60
  5. Step 5: Solve for x
    x = 94,441.60/263.12
  6. Step 6: Final answer
    x = 358.94

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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.