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Finding the Fourth Proportional to 544.49, 816.74 and 313.21

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Solution

The fourth proportional to 544.49, 816.74 and 313.21 is: 469.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.49 : 816.74 = 313.21 : x
  2. Step 2: Convert to fraction form
    544.49/816.74 = 313.21/x
  3. Step 3: Cross multiply
    544.49x = 816.74 × 313.21
  4. Step 4: Simplify right side
    544.49x = 255,811.14
  5. Step 5: Solve for x
    x = 255,811.14/544.49
  6. Step 6: Final answer
    x = 469.82

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Similar ratio
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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.