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Finding the Fourth Proportional to 351.50, 482.60 and 342.47

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Solution

The fourth proportional to 351.50, 482.60 and 342.47 is: 470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.50 : 482.60 = 342.47 : x
  2. Step 2: Convert to fraction form
    351.50/482.60 = 342.47/x
  3. Step 3: Cross multiply
    351.50x = 482.60 × 342.47
  4. Step 4: Simplify right side
    351.50x = 165,271.90
  5. Step 5: Solve for x
    x = 165,271.90/351.50
  6. Step 6: Final answer
    x = 470.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.