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Finding the Fourth Proportional to 705.18, 973.26 and 394.68

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Solution

The fourth proportional to 705.18, 973.26 and 394.68 is: 544.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.18 : 973.26 = 394.68 : x
  2. Step 2: Convert to fraction form
    705.18/973.26 = 394.68/x
  3. Step 3: Cross multiply
    705.18x = 973.26 × 394.68
  4. Step 4: Simplify right side
    705.18x = 384,126.26
  5. Step 5: Solve for x
    x = 384,126.26/705.18
  6. Step 6: Final answer
    x = 544.72

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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.