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Finding the Fourth Proportional to 491.92, 678.54 and 365.77

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Solution

The fourth proportional to 491.92, 678.54 and 365.77 is: 504.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.92 : 678.54 = 365.77 : x
  2. Step 2: Convert to fraction form
    491.92/678.54 = 365.77/x
  3. Step 3: Cross multiply
    491.92x = 678.54 × 365.77
  4. Step 4: Simplify right side
    491.92x = 248,189.58
  5. Step 5: Solve for x
    x = 248,189.58/491.92
  6. Step 6: Final answer
    x = 504.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.