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Finding the Fourth Proportional to 372.96, 515.16 and 370.53

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Solution

The fourth proportional to 372.96, 515.16 and 370.53 is: 511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.96 : 515.16 = 370.53 : x
  2. Step 2: Convert to fraction form
    372.96/515.16 = 370.53/x
  3. Step 3: Cross multiply
    372.96x = 515.16 × 370.53
  4. Step 4: Simplify right side
    372.96x = 190,882.23
  5. Step 5: Solve for x
    x = 190,882.23/372.96
  6. Step 6: Final answer
    x = 511.80

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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.