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Finding the Fourth Proportional to 216.13, 298.17 and 146.17

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Solution

The fourth proportional to 216.13, 298.17 and 146.17 is: 201.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.13 : 298.17 = 146.17 : x
  2. Step 2: Convert to fraction form
    216.13/298.17 = 146.17/x
  3. Step 3: Cross multiply
    216.13x = 298.17 × 146.17
  4. Step 4: Simplify right side
    216.13x = 43,582.76
  5. Step 5: Solve for x
    x = 43,582.76/216.13
  6. Step 6: Final answer
    x = 201.65

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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.