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Finding the Fourth Proportional to 624.63, 936.93 and 208.19

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Solution

The fourth proportional to 624.63, 936.93 and 208.19 is: 312.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.63 : 936.93 = 208.19 : x
  2. Step 2: Convert to fraction form
    624.63/936.93 = 208.19/x
  3. Step 3: Cross multiply
    624.63x = 936.93 × 208.19
  4. Step 4: Simplify right side
    624.63x = 195,062.42
  5. Step 5: Solve for x
    x = 195,062.42/624.63
  6. Step 6: Final answer
    x = 312.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.