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Finding the Fourth Proportional to 606.84, 909.95 and 216.83

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Solution

The fourth proportional to 606.84, 909.95 and 216.83 is: 325.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    606.84 : 909.95 = 216.83 : x
  2. Step 2: Convert to fraction form
    606.84/909.95 = 216.83/x
  3. Step 3: Cross multiply
    606.84x = 909.95 × 216.83
  4. Step 4: Simplify right side
    606.84x = 197,298.82
  5. Step 5: Solve for x
    x = 197,298.82/606.84
  6. Step 6: Final answer
    x = 325.12

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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.