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Finding the Fourth Proportional to 610.80, 916.26 and 199.93

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Solution

The fourth proportional to 610.80, 916.26 and 199.93 is: 299.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.80 : 916.26 = 199.93 : x
  2. Step 2: Convert to fraction form
    610.80/916.26 = 199.93/x
  3. Step 3: Cross multiply
    610.80x = 916.26 × 199.93
  4. Step 4: Simplify right side
    610.80x = 183,186.86
  5. Step 5: Solve for x
    x = 183,186.86/610.80
  6. Step 6: Final answer
    x = 299.91

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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.