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Finding the Fourth Proportional to 624.43, 937.18 and 259.21

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Solution

The fourth proportional to 624.43, 937.18 and 259.21 is: 389.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.43 : 937.18 = 259.21 : x
  2. Step 2: Convert to fraction form
    624.43/937.18 = 259.21/x
  3. Step 3: Cross multiply
    624.43x = 937.18 × 259.21
  4. Step 4: Simplify right side
    624.43x = 242,921.74
  5. Step 5: Solve for x
    x = 242,921.74/624.43
  6. Step 6: Final answer
    x = 389.03

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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.