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Finding the Fourth Proportional to 455.81, 629 and 259.38

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Solution

The fourth proportional to 455.81, 629 and 259.38 is: 357.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.81 : 629 = 259.38 : x
  2. Step 2: Convert to fraction form
    455.81/629 = 259.38/x
  3. Step 3: Cross multiply
    455.81x = 629 × 259.38
  4. Step 4: Simplify right side
    455.81x = 163,150.02
  5. Step 5: Solve for x
    x = 163,150.02/455.81
  6. Step 6: Final answer
    x = 357.93

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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.