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Finding the Fourth Proportional to 364.21, 546.14 and 120.66

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Solution

The fourth proportional to 364.21, 546.14 and 120.66 is: 180.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.21 : 546.14 = 120.66 : x
  2. Step 2: Convert to fraction form
    364.21/546.14 = 120.66/x
  3. Step 3: Cross multiply
    364.21x = 546.14 × 120.66
  4. Step 4: Simplify right side
    364.21x = 65,895.51
  5. Step 5: Solve for x
    x = 65,895.51/364.21
  6. Step 6: Final answer
    x = 180.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.