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Finding the Fourth Proportional to 705.54, 973.61 and 394.98

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Solution

The fourth proportional to 705.54, 973.61 and 394.98 is: 545.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.54 : 973.61 = 394.98 : x
  2. Step 2: Convert to fraction form
    705.54/973.61 = 394.98/x
  3. Step 3: Cross multiply
    705.54x = 973.61 × 394.98
  4. Step 4: Simplify right side
    705.54x = 384,556.48
  5. Step 5: Solve for x
    x = 384,556.48/705.54
  6. Step 6: Final answer
    x = 545.05

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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.