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Finding the Fourth Proportional to 491.60, 735.60 and 329.60

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Solution

The fourth proportional to 491.60, 735.60 and 329.60 is: 493.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.60 : 735.60 = 329.60 : x
  2. Step 2: Convert to fraction form
    491.60/735.60 = 329.60/x
  3. Step 3: Cross multiply
    491.60x = 735.60 × 329.60
  4. Step 4: Simplify right side
    491.60x = 242,453.76
  5. Step 5: Solve for x
    x = 242,453.76/491.60
  6. Step 6: Final answer
    x = 493.19

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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.