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Finding the Fourth Proportional to 150.38, 207.30 and 127.10

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Solution

The fourth proportional to 150.38, 207.30 and 127.10 is: 175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.38 : 207.30 = 127.10 : x
  2. Step 2: Convert to fraction form
    150.38/207.30 = 127.10/x
  3. Step 3: Cross multiply
    150.38x = 207.30 × 127.10
  4. Step 4: Simplify right side
    150.38x = 26,347.83
  5. Step 5: Solve for x
    x = 26,347.83/150.38
  6. Step 6: Final answer
    x = 175.21

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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.