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Finding the Fourth Proportional to 303.22, 455.51 and 216.77

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Solution

The fourth proportional to 303.22, 455.51 and 216.77 is: 325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.22 : 455.51 = 216.77 : x
  2. Step 2: Convert to fraction form
    303.22/455.51 = 216.77/x
  3. Step 3: Cross multiply
    303.22x = 455.51 × 216.77
  4. Step 4: Simplify right side
    303.22x = 98,740.90
  5. Step 5: Solve for x
    x = 98,740.90/303.22
  6. Step 6: Final answer
    x = 325.64

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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.