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Finding the Fourth Proportional to 610.45, 915.77 and 199.49

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Solution

The fourth proportional to 610.45, 915.77 and 199.49 is: 299.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.45 : 915.77 = 199.49 : x
  2. Step 2: Convert to fraction form
    610.45/915.77 = 199.49/x
  3. Step 3: Cross multiply
    610.45x = 915.77 × 199.49
  4. Step 4: Simplify right side
    610.45x = 182,689.75
  5. Step 5: Solve for x
    x = 182,689.75/610.45
  6. Step 6: Final answer
    x = 299.27

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1.5x scale

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.