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Finding the Fourth Proportional to 618.12, 929.34 and 475.56

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Solution

The fourth proportional to 618.12, 929.34 and 475.56 is: 715.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.12 : 929.34 = 475.56 : x
  2. Step 2: Convert to fraction form
    618.12/929.34 = 475.56/x
  3. Step 3: Cross multiply
    618.12x = 929.34 × 475.56
  4. Step 4: Simplify right side
    618.12x = 441,956.93
  5. Step 5: Solve for x
    x = 441,956.93/618.12
  6. Step 6: Final answer
    x = 715.00

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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.