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Finding the Fourth Proportional to 624.62, 936.56 and 259.66

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Solution

The fourth proportional to 624.62, 936.56 and 259.66 is: 389.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.62 : 936.56 = 259.66 : x
  2. Step 2: Convert to fraction form
    624.62/936.56 = 259.66/x
  3. Step 3: Cross multiply
    624.62x = 936.56 × 259.66
  4. Step 4: Simplify right side
    624.62x = 243,187.17
  5. Step 5: Solve for x
    x = 243,187.17/624.62
  6. Step 6: Final answer
    x = 389.34

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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.