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Finding the Fourth Proportional to 703.63, 970.81 and 454.96

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Solution

The fourth proportional to 703.63, 970.81 and 454.96 is: 627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.63 : 970.81 = 454.96 : x
  2. Step 2: Convert to fraction form
    703.63/970.81 = 454.96/x
  3. Step 3: Cross multiply
    703.63x = 970.81 × 454.96
  4. Step 4: Simplify right side
    703.63x = 441,679.72
  5. Step 5: Solve for x
    x = 441,679.72/703.63
  6. Step 6: Final answer
    x = 627.72

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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.