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Finding the Fourth Proportional to 611.44, 915.74 and 302.34

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Solution

The fourth proportional to 611.44, 915.74 and 302.34 is: 452.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.44 : 915.74 = 302.34 : x
  2. Step 2: Convert to fraction form
    611.44/915.74 = 302.34/x
  3. Step 3: Cross multiply
    611.44x = 915.74 × 302.34
  4. Step 4: Simplify right side
    611.44x = 276,864.83
  5. Step 5: Solve for x
    x = 276,864.83/611.44
  6. Step 6: Final answer
    x = 452.81

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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.