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Finding the Fourth Proportional to 233.55, 348.57 and 218.16

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Solution

The fourth proportional to 233.55, 348.57 and 218.16 is: 325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.55 : 348.57 = 218.16 : x
  2. Step 2: Convert to fraction form
    233.55/348.57 = 218.16/x
  3. Step 3: Cross multiply
    233.55x = 348.57 × 218.16
  4. Step 4: Simplify right side
    233.55x = 76,044.03
  5. Step 5: Solve for x
    x = 76,044.03/233.55
  6. Step 6: Final answer
    x = 325.60

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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.