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Finding the Fourth Proportional to 610.30, 915.57 and 199.42

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Solution

The fourth proportional to 610.30, 915.57 and 199.42 is: 299.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.30 : 915.57 = 199.42 : x
  2. Step 2: Convert to fraction form
    610.30/915.57 = 199.42/x
  3. Step 3: Cross multiply
    610.30x = 915.57 × 199.42
  4. Step 4: Simplify right side
    610.30x = 182,582.97
  5. Step 5: Solve for x
    x = 182,582.97/610.30
  6. Step 6: Final answer
    x = 299.17

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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.