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Finding the Fourth Proportional to 366.88, 506.30 and 209.53

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Solution

The fourth proportional to 366.88, 506.30 and 209.53 is: 289.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.88 : 506.30 = 209.53 : x
  2. Step 2: Convert to fraction form
    366.88/506.30 = 209.53/x
  3. Step 3: Cross multiply
    366.88x = 506.30 × 209.53
  4. Step 4: Simplify right side
    366.88x = 106,085.04
  5. Step 5: Solve for x
    x = 106,085.04/366.88
  6. Step 6: Final answer
    x = 289.16

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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.