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Finding the Fourth Proportional to 495.65, 680.21 and 448.92

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Solution

The fourth proportional to 495.65, 680.21 and 448.92 is: 616.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.65 : 680.21 = 448.92 : x
  2. Step 2: Convert to fraction form
    495.65/680.21 = 448.92/x
  3. Step 3: Cross multiply
    495.65x = 680.21 × 448.92
  4. Step 4: Simplify right side
    495.65x = 305,357.63
  5. Step 5: Solve for x
    x = 305,357.63/495.65
  6. Step 6: Final answer
    x = 616.08

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.