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Finding the Fourth Proportional to 1,054.26, 1,582.75 and 810.95

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Solution

The fourth proportional to 1,054.26, 1,582.75 and 810.95 is: 1,217.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.26 : 1,582.75 = 810.95 : x
  2. Step 2: Convert to fraction form
    1,054.26/1,582.75 = 810.95/x
  3. Step 3: Cross multiply
    1,054.26x = 1,582.75 × 810.95
  4. Step 4: Simplify right side
    1,054.26x = 1,283,531.11
  5. Step 5: Solve for x
    x = 1,283,531.11/1,054.26
  6. Step 6: Final answer
    x = 1,217.47

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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.