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Finding the Fourth Proportional to 669.96, 998.44 and 653.56

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Solution

The fourth proportional to 669.96, 998.44 and 653.56 is: 973.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.96 : 998.44 = 653.56 : x
  2. Step 2: Convert to fraction form
    669.96/998.44 = 653.56/x
  3. Step 3: Cross multiply
    669.96x = 998.44 × 653.56
  4. Step 4: Simplify right side
    669.96x = 652,536.32
  5. Step 5: Solve for x
    x = 652,536.32/669.96
  6. Step 6: Final answer
    x = 973.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.