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Finding the Fourth Proportional to 524.28, 785.74 and 307.96

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Solution

The fourth proportional to 524.28, 785.74 and 307.96 is: 461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.28 : 785.74 = 307.96 : x
  2. Step 2: Convert to fraction form
    524.28/785.74 = 307.96/x
  3. Step 3: Cross multiply
    524.28x = 785.74 × 307.96
  4. Step 4: Simplify right side
    524.28x = 241,976.49
  5. Step 5: Solve for x
    x = 241,976.49/524.28
  6. Step 6: Final answer
    x = 461.54

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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.