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Finding the Fourth Proportional to 647.02, 969.99 and 262

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Solution

The fourth proportional to 647.02, 969.99 and 262 is: 392.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.02 : 969.99 = 262 : x
  2. Step 2: Convert to fraction form
    647.02/969.99 = 262/x
  3. Step 3: Cross multiply
    647.02x = 969.99 × 262
  4. Step 4: Simplify right side
    647.02x = 254,137.38
  5. Step 5: Solve for x
    x = 254,137.38/647.02
  6. Step 6: Final answer
    x = 392.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.