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Finding the Fourth Proportional to 610.99, 916.53 and 200.12

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Solution

The fourth proportional to 610.99, 916.53 and 200.12 is: 300.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.99 : 916.53 = 200.12 : x
  2. Step 2: Convert to fraction form
    610.99/916.53 = 200.12/x
  3. Step 3: Cross multiply
    610.99x = 916.53 × 200.12
  4. Step 4: Simplify right side
    610.99x = 183,415.98
  5. Step 5: Solve for x
    x = 183,415.98/610.99
  6. Step 6: Final answer
    x = 300.20

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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.