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Finding the Fourth Proportional to 623.86, 935.99 and 299.25

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Solution

The fourth proportional to 623.86, 935.99 and 299.25 is: 448.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.86 : 935.99 = 299.25 : x
  2. Step 2: Convert to fraction form
    623.86/935.99 = 299.25/x
  3. Step 3: Cross multiply
    623.86x = 935.99 × 299.25
  4. Step 4: Simplify right side
    623.86x = 280,094.63
  5. Step 5: Solve for x
    x = 280,094.63/623.86
  6. Step 6: Final answer
    x = 448.97

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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.