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Finding the Fourth Proportional to 469.94, 704.97 and 392.18

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Solution

The fourth proportional to 469.94, 704.97 and 392.18 is: 588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.94 : 704.97 = 392.18 : x
  2. Step 2: Convert to fraction form
    469.94/704.97 = 392.18/x
  3. Step 3: Cross multiply
    469.94x = 704.97 × 392.18
  4. Step 4: Simplify right side
    469.94x = 276,471.61
  5. Step 5: Solve for x
    x = 276,471.61/469.94
  6. Step 6: Final answer
    x = 588.32

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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.