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Finding the Fourth Proportional to 607.11, 910.20 and 216.87

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Solution

The fourth proportional to 607.11, 910.20 and 216.87 is: 325.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.11 : 910.20 = 216.87 : x
  2. Step 2: Convert to fraction form
    607.11/910.20 = 216.87/x
  3. Step 3: Cross multiply
    607.11x = 910.20 × 216.87
  4. Step 4: Simplify right side
    607.11x = 197,395.07
  5. Step 5: Solve for x
    x = 197,395.07/607.11
  6. Step 6: Final answer
    x = 325.14

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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.