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Finding the Fourth Proportional to 618.55, 926.60 and 473.56

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Solution

The fourth proportional to 618.55, 926.60 and 473.56 is: 709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.55 : 926.60 = 473.56 : x
  2. Step 2: Convert to fraction form
    618.55/926.60 = 473.56/x
  3. Step 3: Cross multiply
    618.55x = 926.60 × 473.56
  4. Step 4: Simplify right side
    618.55x = 438,800.70
  5. Step 5: Solve for x
    x = 438,800.70/618.55
  6. Step 6: Final answer
    x = 709.40

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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.