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Finding the Fourth Proportional to 671.60, 930.63 and 630.50

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Solution

The fourth proportional to 671.60, 930.63 and 630.50 is: 873.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.60 : 930.63 = 630.50 : x
  2. Step 2: Convert to fraction form
    671.60/930.63 = 630.50/x
  3. Step 3: Cross multiply
    671.60x = 930.63 × 630.50
  4. Step 4: Simplify right side
    671.60x = 586,759.93
  5. Step 5: Solve for x
    x = 586,759.93/671.60
  6. Step 6: Final answer
    x = 873.67

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.