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Finding the Fourth Proportional to 1,366.36, 2,045.89 and 715.73

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Solution

The fourth proportional to 1,366.36, 2,045.89 and 715.73 is: 1,071.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,366.36 : 2,045.89 = 715.73 : x
  2. Step 2: Convert to fraction form
    1,366.36/2,045.89 = 715.73/x
  3. Step 3: Cross multiply
    1,366.36x = 2,045.89 × 715.73
  4. Step 4: Simplify right side
    1,366.36x = 1,464,294.62
  5. Step 5: Solve for x
    x = 1,464,294.62/1,366.36
  6. Step 6: Final answer
    x = 1,071.68

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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.