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Finding the Fourth Proportional to 1,358.03, 2,036.82 and 383.91

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Solution

The fourth proportional to 1,358.03, 2,036.82 and 383.91 is: 575.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.03 : 2,036.82 = 383.91 : x
  2. Step 2: Convert to fraction form
    1,358.03/2,036.82 = 383.91/x
  3. Step 3: Cross multiply
    1,358.03x = 2,036.82 × 383.91
  4. Step 4: Simplify right side
    1,358.03x = 781,948.29
  5. Step 5: Solve for x
    x = 781,948.29/1,358.03
  6. Step 6: Final answer
    x = 575.79

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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.