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Finding the Fourth Proportional to 618.05, 926.04 and 434.54

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Solution

The fourth proportional to 618.05, 926.04 and 434.54 is: 651.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.05 : 926.04 = 434.54 : x
  2. Step 2: Convert to fraction form
    618.05/926.04 = 434.54/x
  3. Step 3: Cross multiply
    618.05x = 926.04 × 434.54
  4. Step 4: Simplify right side
    618.05x = 402,405.37
  5. Step 5: Solve for x
    x = 402,405.37/618.05
  6. Step 6: Final answer
    x = 651.09

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Double scale
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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.