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Finding the Fourth Proportional to 650.58, 974.90 and 325.50

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Solution

The fourth proportional to 650.58, 974.90 and 325.50 is: 487.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.58 : 974.90 = 325.50 : x
  2. Step 2: Convert to fraction form
    650.58/974.90 = 325.50/x
  3. Step 3: Cross multiply
    650.58x = 974.90 × 325.50
  4. Step 4: Simplify right side
    650.58x = 317,329.95
  5. Step 5: Solve for x
    x = 317,329.95/650.58
  6. Step 6: Final answer
    x = 487.76

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1.5x scale

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.