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Finding the Fourth Proportional to 379.34, 526.28 and 375.74

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Solution

The fourth proportional to 379.34, 526.28 and 375.74 is: 521.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.34 : 526.28 = 375.74 : x
  2. Step 2: Convert to fraction form
    379.34/526.28 = 375.74/x
  3. Step 3: Cross multiply
    379.34x = 526.28 × 375.74
  4. Step 4: Simplify right side
    379.34x = 197,744.45
  5. Step 5: Solve for x
    x = 197,744.45/379.34
  6. Step 6: Final answer
    x = 521.29

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.