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Finding the Fourth Proportional to 379.30, 525.55 and 371.10

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Solution

The fourth proportional to 379.30, 525.55 and 371.10 is: 514.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.30 : 525.55 = 371.10 : x
  2. Step 2: Convert to fraction form
    379.30/525.55 = 371.10/x
  3. Step 3: Cross multiply
    379.30x = 525.55 × 371.10
  4. Step 4: Simplify right side
    379.30x = 195,031.61
  5. Step 5: Solve for x
    x = 195,031.61/379.30
  6. Step 6: Final answer
    x = 514.19

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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.