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Finding the Fourth Proportional to 705.17, 973.13 and 394.67

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Solution

The fourth proportional to 705.17, 973.13 and 394.67 is: 544.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.17 : 973.13 = 394.67 : x
  2. Step 2: Convert to fraction form
    705.17/973.13 = 394.67/x
  3. Step 3: Cross multiply
    705.17x = 973.13 × 394.67
  4. Step 4: Simplify right side
    705.17x = 384,065.68
  5. Step 5: Solve for x
    x = 384,065.68/705.17
  6. Step 6: Final answer
    x = 544.64

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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.