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Finding the Third Proportional to 455.06 and 697.22

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Solution

The third proportional to 455.06 and 697.22 is: 1,068.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.06 : 697.22 = 697.22 : x
  2. Step 2: Convert to fraction form
    455.06/697.22 = 697.22/x
  3. Step 3: Cross multiply
    455.06x = 697.22 × 697.22
  4. Step 4: Simplify right side
    455.06x = 486,113.99
  5. Step 5: Solve for x
    x = 486,113.99/455.06
  6. Step 6: Final answer
    x = 1,068.24

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.