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Finding the Fourth Proportional to 624.98, 862.45 and 376.18

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Solution

The fourth proportional to 624.98, 862.45 and 376.18 is: 519.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.98 : 862.45 = 376.18 : x
  2. Step 2: Convert to fraction form
    624.98/862.45 = 376.18/x
  3. Step 3: Cross multiply
    624.98x = 862.45 × 376.18
  4. Step 4: Simplify right side
    624.98x = 324,433.34
  5. Step 5: Solve for x
    x = 324,433.34/624.98
  6. Step 6: Final answer
    x = 519.11

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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.