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Finding the Third Proportional to 432.84 and 623.64

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Solution

The third proportional to 432.84 and 623.64 is: 898.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.84 : 623.64 = 623.64 : x
  2. Step 2: Convert to fraction form
    432.84/623.64 = 623.64/x
  3. Step 3: Cross multiply
    432.84x = 623.64 × 623.64
  4. Step 4: Simplify right side
    432.84x = 388,922.76
  5. Step 5: Solve for x
    x = 388,922.76/432.84
  6. Step 6: Final answer
    x = 898.53

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.