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Finding the Fourth Proportional to 491.04, 736.20 and 490.80

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Solution

The fourth proportional to 491.04, 736.20 and 490.80 is: 735.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.04 : 736.20 = 490.80 : x
  2. Step 2: Convert to fraction form
    491.04/736.20 = 490.80/x
  3. Step 3: Cross multiply
    491.04x = 736.20 × 490.80
  4. Step 4: Simplify right side
    491.04x = 361,326.96
  5. Step 5: Solve for x
    x = 361,326.96/491.04
  6. Step 6: Final answer
    x = 735.84

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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.