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Finding the Fourth Proportional to 556.49, 766.99 and 481.65

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Solution

The fourth proportional to 556.49, 766.99 and 481.65 is: 663.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.49 : 766.99 = 481.65 : x
  2. Step 2: Convert to fraction form
    556.49/766.99 = 481.65/x
  3. Step 3: Cross multiply
    556.49x = 766.99 × 481.65
  4. Step 4: Simplify right side
    556.49x = 369,421.62
  5. Step 5: Solve for x
    x = 369,421.62/556.49
  6. Step 6: Final answer
    x = 663.84

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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.