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Finding the Fourth Proportional to 1,465.62, 2,191.77 and 878.94

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Solution

The fourth proportional to 1,465.62, 2,191.77 and 878.94 is: 1,314.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.62 : 2,191.77 = 878.94 : x
  2. Step 2: Convert to fraction form
    1,465.62/2,191.77 = 878.94/x
  3. Step 3: Cross multiply
    1,465.62x = 2,191.77 × 878.94
  4. Step 4: Simplify right side
    1,465.62x = 1,926,434.32
  5. Step 5: Solve for x
    x = 1,926,434.32/1,465.62
  6. Step 6: Final answer
    x = 1,314.42

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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.