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Finding the Fourth Proportional to 388.25, 536.23 and 263.70

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Solution

The fourth proportional to 388.25, 536.23 and 263.70 is: 364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.25 : 536.23 = 263.70 : x
  2. Step 2: Convert to fraction form
    388.25/536.23 = 263.70/x
  3. Step 3: Cross multiply
    388.25x = 536.23 × 263.70
  4. Step 4: Simplify right side
    388.25x = 141,404.52
  5. Step 5: Solve for x
    x = 141,404.52/388.25
  6. Step 6: Final answer
    x = 364.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.