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Finding the Fourth Proportional to 456.51, 629.67 and 351.63

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Solution

The fourth proportional to 456.51, 629.67 and 351.63 is: 485.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.51 : 629.67 = 351.63 : x
  2. Step 2: Convert to fraction form
    456.51/629.67 = 351.63/x
  3. Step 3: Cross multiply
    456.51x = 629.67 × 351.63
  4. Step 4: Simplify right side
    456.51x = 221,410.86
  5. Step 5: Solve for x
    x = 221,410.86/456.51
  6. Step 6: Final answer
    x = 485.01

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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.