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Finding the Fourth Proportional to 439.16, 606.66 and 373.64

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Solution

The fourth proportional to 439.16, 606.66 and 373.64 is: 516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.16 : 606.66 = 373.64 : x
  2. Step 2: Convert to fraction form
    439.16/606.66 = 373.64/x
  3. Step 3: Cross multiply
    439.16x = 606.66 × 373.64
  4. Step 4: Simplify right side
    439.16x = 226,672.44
  5. Step 5: Solve for x
    x = 226,672.44/439.16
  6. Step 6: Final answer
    x = 516.15

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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.