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Finding the Fourth Proportional to 610.42, 916.01 and 379.76

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Solution

The fourth proportional to 610.42, 916.01 and 379.76 is: 569.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.42 : 916.01 = 379.76 : x
  2. Step 2: Convert to fraction form
    610.42/916.01 = 379.76/x
  3. Step 3: Cross multiply
    610.42x = 916.01 × 379.76
  4. Step 4: Simplify right side
    610.42x = 347,861.43
  5. Step 5: Solve for x
    x = 347,861.43/610.42
  6. Step 6: Final answer
    x = 569.87

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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.