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Finding the Fourth Proportional to 624.14, 935.07 and 418.96

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Solution

The fourth proportional to 624.14, 935.07 and 418.96 is: 627.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.14 : 935.07 = 418.96 : x
  2. Step 2: Convert to fraction form
    624.14/935.07 = 418.96/x
  3. Step 3: Cross multiply
    624.14x = 935.07 × 418.96
  4. Step 4: Simplify right side
    624.14x = 391,756.93
  5. Step 5: Solve for x
    x = 391,756.93/624.14
  6. Step 6: Final answer
    x = 627.67

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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.