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Finding the Fourth Proportional to 618.36, 928.50 and 475.32

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Solution

The fourth proportional to 618.36, 928.50 and 475.32 is: 713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.36 : 928.50 = 475.32 : x
  2. Step 2: Convert to fraction form
    618.36/928.50 = 475.32/x
  3. Step 3: Cross multiply
    618.36x = 928.50 × 475.32
  4. Step 4: Simplify right side
    618.36x = 441,334.62
  5. Step 5: Solve for x
    x = 441,334.62/618.36
  6. Step 6: Final answer
    x = 713.72

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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.