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Finding the Fourth Proportional to 127.67, 191.47 and 35.10

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Solution

The fourth proportional to 127.67, 191.47 and 35.10 is: 52.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.67 : 191.47 = 35.10 : x
  2. Step 2: Convert to fraction form
    127.67/191.47 = 35.10/x
  3. Step 3: Cross multiply
    127.67x = 191.47 × 35.10
  4. Step 4: Simplify right side
    127.67x = 6,720.34
  5. Step 5: Solve for x
    x = 6,720.34/127.67
  6. Step 6: Final answer
    x = 52.64

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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.