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Finding the Fourth Proportional to 324.53, 448.31 and 258.95

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Solution

The fourth proportional to 324.53, 448.31 and 258.95 is: 357.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.53 : 448.31 = 258.95 : x
  2. Step 2: Convert to fraction form
    324.53/448.31 = 258.95/x
  3. Step 3: Cross multiply
    324.53x = 448.31 × 258.95
  4. Step 4: Simplify right side
    324.53x = 116,089.87
  5. Step 5: Solve for x
    x = 116,089.87/324.53
  6. Step 6: Final answer
    x = 357.72

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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.