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Finding the Fourth Proportional to 614.64, 923.04 and 523.92

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Solution

The fourth proportional to 614.64, 923.04 and 523.92 is: 786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.64 : 923.04 = 523.92 : x
  2. Step 2: Convert to fraction form
    614.64/923.04 = 523.92/x
  3. Step 3: Cross multiply
    614.64x = 923.04 × 523.92
  4. Step 4: Simplify right side
    614.64x = 483,599.12
  5. Step 5: Solve for x
    x = 483,599.12/614.64
  6. Step 6: Final answer
    x = 786.80

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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.