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Finding the Fourth Proportional to 233.66, 348.80 and 216.77

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Solution

The fourth proportional to 233.66, 348.80 and 216.77 is: 323.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.66 : 348.80 = 216.77 : x
  2. Step 2: Convert to fraction form
    233.66/348.80 = 216.77/x
  3. Step 3: Cross multiply
    233.66x = 348.80 × 216.77
  4. Step 4: Simplify right side
    233.66x = 75,606.55
  5. Step 5: Solve for x
    x = 75,606.55/233.66
  6. Step 6: Final answer
    x = 323.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.