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Finding the Fourth Proportional to 364.95, 547.65 and 211.19

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Solution

The fourth proportional to 364.95, 547.65 and 211.19 is: 316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.95 : 547.65 = 211.19 : x
  2. Step 2: Convert to fraction form
    364.95/547.65 = 211.19/x
  3. Step 3: Cross multiply
    364.95x = 547.65 × 211.19
  4. Step 4: Simplify right side
    364.95x = 115,655.47
  5. Step 5: Solve for x
    x = 115,655.47/364.95
  6. Step 6: Final answer
    x = 316.91

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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.