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Finding the Fourth Proportional to 491.48, 736.99 and 286.12

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Solution

The fourth proportional to 491.48, 736.99 and 286.12 is: 429.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.48 : 736.99 = 286.12 : x
  2. Step 2: Convert to fraction form
    491.48/736.99 = 286.12/x
  3. Step 3: Cross multiply
    491.48x = 736.99 × 286.12
  4. Step 4: Simplify right side
    491.48x = 210,867.99
  5. Step 5: Solve for x
    x = 210,867.99/491.48
  6. Step 6: Final answer
    x = 429.04

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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.