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Finding the Fourth Proportional to 252.10, 347.70 and 148.60

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Solution

The fourth proportional to 252.10, 347.70 and 148.60 is: 204.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.10 : 347.70 = 148.60 : x
  2. Step 2: Convert to fraction form
    252.10/347.70 = 148.60/x
  3. Step 3: Cross multiply
    252.10x = 347.70 × 148.60
  4. Step 4: Simplify right side
    252.10x = 51,668.22
  5. Step 5: Solve for x
    x = 51,668.22/252.10
  6. Step 6: Final answer
    x = 204.95

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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.