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Finding the Fourth Proportional to 1,289.07, 1,933.29 and 364.72

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Solution

The fourth proportional to 1,289.07, 1,933.29 and 364.72 is: 546.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.07 : 1,933.29 = 364.72 : x
  2. Step 2: Convert to fraction form
    1,289.07/1,933.29 = 364.72/x
  3. Step 3: Cross multiply
    1,289.07x = 1,933.29 × 364.72
  4. Step 4: Simplify right side
    1,289.07x = 705,109.53
  5. Step 5: Solve for x
    x = 705,109.53/1,289.07
  6. Step 6: Final answer
    x = 546.99

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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.