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Finding the Fourth Proportional to 388.83, 536.19 and 270.95

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Solution

The fourth proportional to 388.83, 536.19 and 270.95 is: 373.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.83 : 536.19 = 270.95 : x
  2. Step 2: Convert to fraction form
    388.83/536.19 = 270.95/x
  3. Step 3: Cross multiply
    388.83x = 536.19 × 270.95
  4. Step 4: Simplify right side
    388.83x = 145,276.98
  5. Step 5: Solve for x
    x = 145,276.98/388.83
  6. Step 6: Final answer
    x = 373.62

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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.