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Finding the Fourth Proportional to 379.47, 523.40 and 366.77

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Solution

The fourth proportional to 379.47, 523.40 and 366.77 is: 505.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.47 : 523.40 = 366.77 : x
  2. Step 2: Convert to fraction form
    379.47/523.40 = 366.77/x
  3. Step 3: Cross multiply
    379.47x = 523.40 × 366.77
  4. Step 4: Simplify right side
    379.47x = 191,965.72
  5. Step 5: Solve for x
    x = 191,965.72/379.47
  6. Step 6: Final answer
    x = 505.88

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Find fourth proportional to 189.74, 261.70 and 183.38
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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.