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Finding the Fourth Proportional to 233.49, 321.60 and 210.12

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Solution

The fourth proportional to 233.49, 321.60 and 210.12 is: 289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.49 : 321.60 = 210.12 : x
  2. Step 2: Convert to fraction form
    233.49/321.60 = 210.12/x
  3. Step 3: Cross multiply
    233.49x = 321.60 × 210.12
  4. Step 4: Simplify right side
    233.49x = 67,574.59
  5. Step 5: Solve for x
    x = 67,574.59/233.49
  6. Step 6: Final answer
    x = 289.41

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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.