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Finding the Fourth Proportional to 326.58, 489.47 and 202.99

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Solution

The fourth proportional to 326.58, 489.47 and 202.99 is: 304.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.58 : 489.47 = 202.99 : x
  2. Step 2: Convert to fraction form
    326.58/489.47 = 202.99/x
  3. Step 3: Cross multiply
    326.58x = 489.47 × 202.99
  4. Step 4: Simplify right side
    326.58x = 99,357.52
  5. Step 5: Solve for x
    x = 99,357.52/326.58
  6. Step 6: Final answer
    x = 304.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.