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Finding the Fourth Proportional to 645.71, 967.77 and 298.58

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Solution

The fourth proportional to 645.71, 967.77 and 298.58 is: 447.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.71 : 967.77 = 298.58 : x
  2. Step 2: Convert to fraction form
    645.71/967.77 = 298.58/x
  3. Step 3: Cross multiply
    645.71x = 967.77 × 298.58
  4. Step 4: Simplify right side
    645.71x = 288,951.93
  5. Step 5: Solve for x
    x = 288,951.93/645.71
  6. Step 6: Final answer
    x = 447.50

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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.