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Finding the Fourth Proportional to 211.95, 292.55 and 190.08

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Solution

The fourth proportional to 211.95, 292.55 and 190.08 is: 262.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211.95 : 292.55 = 190.08 : x
  2. Step 2: Convert to fraction form
    211.95/292.55 = 190.08/x
  3. Step 3: Cross multiply
    211.95x = 292.55 × 190.08
  4. Step 4: Simplify right side
    211.95x = 55,607.90
  5. Step 5: Solve for x
    x = 55,607.90/211.95
  6. Step 6: Final answer
    x = 262.36

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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.