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Finding the Fourth Proportional to 703.72, 970.58 and 455.09

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Solution

The fourth proportional to 703.72, 970.58 and 455.09 is: 627.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.72 : 970.58 = 455.09 : x
  2. Step 2: Convert to fraction form
    703.72/970.58 = 455.09/x
  3. Step 3: Cross multiply
    703.72x = 970.58 × 455.09
  4. Step 4: Simplify right side
    703.72x = 441,698.98
  5. Step 5: Solve for x
    x = 441,698.98/703.72
  6. Step 6: Final answer
    x = 627.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.