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Finding the Fourth Proportional to 365.05, 547.68 and 210.95

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Solution

The fourth proportional to 365.05, 547.68 and 210.95 is: 316.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.05 : 547.68 = 210.95 : x
  2. Step 2: Convert to fraction form
    365.05/547.68 = 210.95/x
  3. Step 3: Cross multiply
    365.05x = 547.68 × 210.95
  4. Step 4: Simplify right side
    365.05x = 115,533.10
  5. Step 5: Solve for x
    x = 115,533.10/365.05
  6. Step 6: Final answer
    x = 316.49

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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.