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Finding the Fourth Proportional to 650.88, 976.14 and 338.40

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Solution

The fourth proportional to 650.88, 976.14 and 338.40 is: 507.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.88 : 976.14 = 338.40 : x
  2. Step 2: Convert to fraction form
    650.88/976.14 = 338.40/x
  3. Step 3: Cross multiply
    650.88x = 976.14 × 338.40
  4. Step 4: Simplify right side
    650.88x = 330,325.78
  5. Step 5: Solve for x
    x = 330,325.78/650.88
  6. Step 6: Final answer
    x = 507.51

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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.