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Finding the Fourth Proportional to 372.81, 515.01 and 294.65

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Solution

The fourth proportional to 372.81, 515.01 and 294.65 is: 407.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.81 : 515.01 = 294.65 : x
  2. Step 2: Convert to fraction form
    372.81/515.01 = 294.65/x
  3. Step 3: Cross multiply
    372.81x = 515.01 × 294.65
  4. Step 4: Simplify right side
    372.81x = 151,745.12
  5. Step 5: Solve for x
    x = 151,745.12/372.81
  6. Step 6: Final answer
    x = 407.03

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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.