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Finding the Third Proportional to 914.63 and 1,328.91

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Solution

The third proportional to 914.63 and 1,328.91 is: 1,930.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.63 : 1,328.91 = 1,328.91 : x
  2. Step 2: Convert to fraction form
    914.63/1,328.91 = 1,328.91/x
  3. Step 3: Cross multiply
    914.63x = 1,328.91 × 1,328.91
  4. Step 4: Simplify right side
    914.63x = 1,765,991.82
  5. Step 5: Solve for x
    x = 1,765,991.82/914.63
  6. Step 6: Final answer
    x = 1,930.84

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.