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Finding the Fourth Proportional to 296.50, 409.18 and 193.18

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Solution

The fourth proportional to 296.50, 409.18 and 193.18 is: 266.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.50 : 409.18 = 193.18 : x
  2. Step 2: Convert to fraction form
    296.50/409.18 = 193.18/x
  3. Step 3: Cross multiply
    296.50x = 409.18 × 193.18
  4. Step 4: Simplify right side
    296.50x = 79,045.39
  5. Step 5: Solve for x
    x = 79,045.39/296.50
  6. Step 6: Final answer
    x = 266.59

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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.