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Finding the Fourth Proportional to 494.76, 681.38 and 483.99

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Solution

The fourth proportional to 494.76, 681.38 and 483.99 is: 666.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.76 : 681.38 = 483.99 : x
  2. Step 2: Convert to fraction form
    494.76/681.38 = 483.99/x
  3. Step 3: Cross multiply
    494.76x = 681.38 × 483.99
  4. Step 4: Simplify right side
    494.76x = 329,778.69
  5. Step 5: Solve for x
    x = 329,778.69/494.76
  6. Step 6: Final answer
    x = 666.55

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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.