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Finding the Fourth Proportional to 373.81, 515.61 and 300.30

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Solution

The fourth proportional to 373.81, 515.61 and 300.30 is: 414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.81 : 515.61 = 300.30 : x
  2. Step 2: Convert to fraction form
    373.81/515.61 = 300.30/x
  3. Step 3: Cross multiply
    373.81x = 515.61 × 300.30
  4. Step 4: Simplify right side
    373.81x = 154,837.68
  5. Step 5: Solve for x
    x = 154,837.68/373.81
  6. Step 6: Final answer
    x = 414.21

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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.