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Finding the Fourth Proportional to 1,303.05, 1,954.65 and 329.22

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Solution

The fourth proportional to 1,303.05, 1,954.65 and 329.22 is: 493.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.05 : 1,954.65 = 329.22 : x
  2. Step 2: Convert to fraction form
    1,303.05/1,954.65 = 329.22/x
  3. Step 3: Cross multiply
    1,303.05x = 1,954.65 × 329.22
  4. Step 4: Simplify right side
    1,303.05x = 643,509.87
  5. Step 5: Solve for x
    x = 643,509.87/1,303.05
  6. Step 6: Final answer
    x = 493.85

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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.