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Finding the Fourth Proportional to 618.45, 926.02 and 358.21

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Solution

The fourth proportional to 618.45, 926.02 and 358.21 is: 536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.45 : 926.02 = 358.21 : x
  2. Step 2: Convert to fraction form
    618.45/926.02 = 358.21/x
  3. Step 3: Cross multiply
    618.45x = 926.02 × 358.21
  4. Step 4: Simplify right side
    618.45x = 331,709.62
  5. Step 5: Solve for x
    x = 331,709.62/618.45
  6. Step 6: Final answer
    x = 536.36

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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.