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Finding the Fourth Proportional to 452.19, 623.96 and 253

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Solution

The fourth proportional to 452.19, 623.96 and 253 is: 349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.19 : 623.96 = 253 : x
  2. Step 2: Convert to fraction form
    452.19/623.96 = 253/x
  3. Step 3: Cross multiply
    452.19x = 623.96 × 253
  4. Step 4: Simplify right side
    452.19x = 157,861.88
  5. Step 5: Solve for x
    x = 157,861.88/452.19
  6. Step 6: Final answer
    x = 349.11

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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.