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Finding the Fourth Proportional to 614.27, 915.65 and 579.03

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Solution

The fourth proportional to 614.27, 915.65 and 579.03 is: 863.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.27 : 915.65 = 579.03 : x
  2. Step 2: Convert to fraction form
    614.27/915.65 = 579.03/x
  3. Step 3: Cross multiply
    614.27x = 915.65 × 579.03
  4. Step 4: Simplify right side
    614.27x = 530,185.92
  5. Step 5: Solve for x
    x = 530,185.92/614.27
  6. Step 6: Final answer
    x = 863.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.