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Finding the Fourth Proportional to 1,357.72, 2,036.93 and 383.83

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Solution

The fourth proportional to 1,357.72, 2,036.93 and 383.83 is: 575.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.72 : 2,036.93 = 383.83 : x
  2. Step 2: Convert to fraction form
    1,357.72/2,036.93 = 383.83/x
  3. Step 3: Cross multiply
    1,357.72x = 2,036.93 × 383.83
  4. Step 4: Simplify right side
    1,357.72x = 781,834.84
  5. Step 5: Solve for x
    x = 781,834.84/1,357.72
  6. Step 6: Final answer
    x = 575.84

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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.