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Finding the Fourth Proportional to 366.61, 505.66 and 219.13

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Solution

The fourth proportional to 366.61, 505.66 and 219.13 is: 302.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.61 : 505.66 = 219.13 : x
  2. Step 2: Convert to fraction form
    366.61/505.66 = 219.13/x
  3. Step 3: Cross multiply
    366.61x = 505.66 × 219.13
  4. Step 4: Simplify right side
    366.61x = 110,805.28
  5. Step 5: Solve for x
    x = 110,805.28/366.61
  6. Step 6: Final answer
    x = 302.24

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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.