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Finding the Fourth Proportional to 335.40, 503.26 and 263.40

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Solution

The fourth proportional to 335.40, 503.26 and 263.40 is: 395.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.40 : 503.26 = 263.40 : x
  2. Step 2: Convert to fraction form
    335.40/503.26 = 263.40/x
  3. Step 3: Cross multiply
    335.40x = 503.26 × 263.40
  4. Step 4: Simplify right side
    335.40x = 132,558.68
  5. Step 5: Solve for x
    x = 132,558.68/335.40
  6. Step 6: Final answer
    x = 395.23

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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.