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Finding the Fourth Proportional to 435.20, 652.72 and 127.10

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Solution

The fourth proportional to 435.20, 652.72 and 127.10 is: 190.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.20 : 652.72 = 127.10 : x
  2. Step 2: Convert to fraction form
    435.20/652.72 = 127.10/x
  3. Step 3: Cross multiply
    435.20x = 652.72 × 127.10
  4. Step 4: Simplify right side
    435.20x = 82,960.71
  5. Step 5: Solve for x
    x = 82,960.71/435.20
  6. Step 6: Final answer
    x = 190.63

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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.