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Finding the Fourth Proportional to 379.80, 526.32 and 375.30

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Solution

The fourth proportional to 379.80, 526.32 and 375.30 is: 520.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.80 : 526.32 = 375.30 : x
  2. Step 2: Convert to fraction form
    379.80/526.32 = 375.30/x
  3. Step 3: Cross multiply
    379.80x = 526.32 × 375.30
  4. Step 4: Simplify right side
    379.80x = 197,527.90
  5. Step 5: Solve for x
    x = 197,527.90/379.80
  6. Step 6: Final answer
    x = 520.08

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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.