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Finding the Fourth Proportional to 456.24, 629.19 and 403.59

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Solution

The fourth proportional to 456.24, 629.19 and 403.59 is: 556.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.24 : 629.19 = 403.59 : x
  2. Step 2: Convert to fraction form
    456.24/629.19 = 403.59/x
  3. Step 3: Cross multiply
    456.24x = 629.19 × 403.59
  4. Step 4: Simplify right side
    456.24x = 253,934.79
  5. Step 5: Solve for x
    x = 253,934.79/456.24
  6. Step 6: Final answer
    x = 556.58

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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.