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Finding the Fourth Proportional to 624.08, 935.90 and 253.79

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Solution

The fourth proportional to 624.08, 935.90 and 253.79 is: 380.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.08 : 935.90 = 253.79 : x
  2. Step 2: Convert to fraction form
    624.08/935.90 = 253.79/x
  3. Step 3: Cross multiply
    624.08x = 935.90 × 253.79
  4. Step 4: Simplify right side
    624.08x = 237,516.11
  5. Step 5: Solve for x
    x = 237,516.11/624.08
  6. Step 6: Final answer
    x = 380.59

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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.