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Finding the Fourth Proportional to 374.16, 516.06 and 243.21

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Solution

The fourth proportional to 374.16, 516.06 and 243.21 is: 335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.16 : 516.06 = 243.21 : x
  2. Step 2: Convert to fraction form
    374.16/516.06 = 243.21/x
  3. Step 3: Cross multiply
    374.16x = 516.06 × 243.21
  4. Step 4: Simplify right side
    374.16x = 125,510.95
  5. Step 5: Solve for x
    x = 125,510.95/374.16
  6. Step 6: Final answer
    x = 335.45

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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.