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Finding the Fourth Proportional to 374.06, 515.13 and 372.85

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Solution

The fourth proportional to 374.06, 515.13 and 372.85 is: 513.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.06 : 515.13 = 372.85 : x
  2. Step 2: Convert to fraction form
    374.06/515.13 = 372.85/x
  3. Step 3: Cross multiply
    374.06x = 515.13 × 372.85
  4. Step 4: Simplify right side
    374.06x = 192,063.64
  5. Step 5: Solve for x
    x = 192,063.64/374.06
  6. Step 6: Final answer
    x = 513.46

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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.