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Finding the Fourth Proportional to 214.95, 296.46 and 149.66

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Solution

The fourth proportional to 214.95, 296.46 and 149.66 is: 206.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.95 : 296.46 = 149.66 : x
  2. Step 2: Convert to fraction form
    214.95/296.46 = 149.66/x
  3. Step 3: Cross multiply
    214.95x = 296.46 × 149.66
  4. Step 4: Simplify right side
    214.95x = 44,368.20
  5. Step 5: Solve for x
    x = 44,368.20/214.95
  6. Step 6: Final answer
    x = 206.41

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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.