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Finding the Fourth Proportional to 1,314.73, 1,971.55 and 1,053.91

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Solution

The fourth proportional to 1,314.73, 1,971.55 and 1,053.91 is: 1,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.73 : 1,971.55 = 1,053.91 : x
  2. Step 2: Convert to fraction form
    1,314.73/1,971.55 = 1,053.91/x
  3. Step 3: Cross multiply
    1,314.73x = 1,971.55 × 1,053.91
  4. Step 4: Simplify right side
    1,314.73x = 2,077,821.13
  5. Step 5: Solve for x
    x = 2,077,821.13/1,314.73
  6. Step 6: Final answer
    x = 1,580.42

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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.