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Finding the Fourth Proportional to 381.50, 526.28 and 263.59

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Solution

The fourth proportional to 381.50, 526.28 and 263.59 is: 363.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.50 : 526.28 = 263.59 : x
  2. Step 2: Convert to fraction form
    381.50/526.28 = 263.59/x
  3. Step 3: Cross multiply
    381.50x = 526.28 × 263.59
  4. Step 4: Simplify right side
    381.50x = 138,719.51
  5. Step 5: Solve for x
    x = 138,719.51/381.50
  6. Step 6: Final answer
    x = 363.62

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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.