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Finding the Fourth Proportional to 386.16, 576.48 and 372.66

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Solution

The fourth proportional to 386.16, 576.48 and 372.66 is: 556.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.16 : 576.48 = 372.66 : x
  2. Step 2: Convert to fraction form
    386.16/576.48 = 372.66/x
  3. Step 3: Cross multiply
    386.16x = 576.48 × 372.66
  4. Step 4: Simplify right side
    386.16x = 214,831.04
  5. Step 5: Solve for x
    x = 214,831.04/386.16
  6. Step 6: Final answer
    x = 556.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.