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Finding the Fourth Proportional to 1,277.21, 1,916.71 and 583.97

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Solution

The fourth proportional to 1,277.21, 1,916.71 and 583.97 is: 876.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.21 : 1,916.71 = 583.97 : x
  2. Step 2: Convert to fraction form
    1,277.21/1,916.71 = 583.97/x
  3. Step 3: Cross multiply
    1,277.21x = 1,916.71 × 583.97
  4. Step 4: Simplify right side
    1,277.21x = 1,119,290.10
  5. Step 5: Solve for x
    x = 1,119,290.10/1,277.21
  6. Step 6: Final answer
    x = 876.35

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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.