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Finding the Fourth Proportional to 482.34, 723.56 and 135.68

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Solution

The fourth proportional to 482.34, 723.56 and 135.68 is: 203.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.34 : 723.56 = 135.68 : x
  2. Step 2: Convert to fraction form
    482.34/723.56 = 135.68/x
  3. Step 3: Cross multiply
    482.34x = 723.56 × 135.68
  4. Step 4: Simplify right side
    482.34x = 98,173.75
  5. Step 5: Solve for x
    x = 98,173.75/482.34
  6. Step 6: Final answer
    x = 203.54

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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.