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Finding the Fourth Proportional to 649.12, 972.09 and 341.23

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Solution

The fourth proportional to 649.12, 972.09 and 341.23 is: 511.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.12 : 972.09 = 341.23 : x
  2. Step 2: Convert to fraction form
    649.12/972.09 = 341.23/x
  3. Step 3: Cross multiply
    649.12x = 972.09 × 341.23
  4. Step 4: Simplify right side
    649.12x = 331,701.41
  5. Step 5: Solve for x
    x = 331,701.41/649.12
  6. Step 6: Final answer
    x = 511.01

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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.