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Finding the Fourth Proportional to 601.81, 903.55 and 309.56

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Solution

The fourth proportional to 601.81, 903.55 and 309.56 is: 464.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.81 : 903.55 = 309.56 : x
  2. Step 2: Convert to fraction form
    601.81/903.55 = 309.56/x
  3. Step 3: Cross multiply
    601.81x = 903.55 × 309.56
  4. Step 4: Simplify right side
    601.81x = 279,697.36
  5. Step 5: Solve for x
    x = 279,697.36/601.81
  6. Step 6: Final answer
    x = 464.76

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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.