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Finding the Fourth Proportional to 523.80, 785.34 and 263.70

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Solution

The fourth proportional to 523.80, 785.34 and 263.70 is: 395.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.80 : 785.34 = 263.70 : x
  2. Step 2: Convert to fraction form
    523.80/785.34 = 263.70/x
  3. Step 3: Cross multiply
    523.80x = 785.34 × 263.70
  4. Step 4: Simplify right side
    523.80x = 207,094.16
  5. Step 5: Solve for x
    x = 207,094.16/523.80
  6. Step 6: Final answer
    x = 395.37

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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.