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Finding the Fourth Proportional to 455.81, 682.34 and 293.15

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Solution

The fourth proportional to 455.81, 682.34 and 293.15 is: 438.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.81 : 682.34 = 293.15 : x
  2. Step 2: Convert to fraction form
    455.81/682.34 = 293.15/x
  3. Step 3: Cross multiply
    455.81x = 682.34 × 293.15
  4. Step 4: Simplify right side
    455.81x = 200,026.51
  5. Step 5: Solve for x
    x = 200,026.51/455.81
  6. Step 6: Final answer
    x = 438.84

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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.