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Finding the Fourth Proportional to 618.88, 928.08 and 294.40

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Solution

The fourth proportional to 618.88, 928.08 and 294.40 is: 441.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.88 : 928.08 = 294.40 : x
  2. Step 2: Convert to fraction form
    618.88/928.08 = 294.40/x
  3. Step 3: Cross multiply
    618.88x = 928.08 × 294.40
  4. Step 4: Simplify right side
    618.88x = 273,226.75
  5. Step 5: Solve for x
    x = 273,226.75/618.88
  6. Step 6: Final answer
    x = 441.49

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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.