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Finding the Fourth Proportional to 669.84, 924.38 and 371.12

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Solution

The fourth proportional to 669.84, 924.38 and 371.12 is: 512.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.84 : 924.38 = 371.12 : x
  2. Step 2: Convert to fraction form
    669.84/924.38 = 371.12/x
  3. Step 3: Cross multiply
    669.84x = 924.38 × 371.12
  4. Step 4: Simplify right side
    669.84x = 343,049.43
  5. Step 5: Solve for x
    x = 343,049.43/669.84
  6. Step 6: Final answer
    x = 512.14

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Why These Related Problems?

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