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Finding the Fourth Proportional to 471.58, 650.50 and 392.50

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Solution

The fourth proportional to 471.58, 650.50 and 392.50 is: 541.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.58 : 650.50 = 392.50 : x
  2. Step 2: Convert to fraction form
    471.58/650.50 = 392.50/x
  3. Step 3: Cross multiply
    471.58x = 650.50 × 392.50
  4. Step 4: Simplify right side
    471.58x = 255,321.08
  5. Step 5: Solve for x
    x = 255,321.08/471.58
  6. Step 6: Final answer
    x = 541.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.