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Finding the Fourth Proportional to 670.28, 1,006.50 and 627.08

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Solution

The fourth proportional to 670.28, 1,006.50 and 627.08 is: 941.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.28 : 1,006.50 = 627.08 : x
  2. Step 2: Convert to fraction form
    670.28/1,006.50 = 627.08/x
  3. Step 3: Cross multiply
    670.28x = 1,006.50 × 627.08
  4. Step 4: Simplify right side
    670.28x = 631,156.02
  5. Step 5: Solve for x
    x = 631,156.02/670.28
  6. Step 6: Final answer
    x = 941.63

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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.