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Finding the Fourth Proportional to 1,551.36, 2,328 and 577.56

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Solution

The fourth proportional to 1,551.36, 2,328 and 577.56 is: 866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.36 : 2,328 = 577.56 : x
  2. Step 2: Convert to fraction form
    1,551.36/2,328 = 577.56/x
  3. Step 3: Cross multiply
    1,551.36x = 2,328 × 577.56
  4. Step 4: Simplify right side
    1,551.36x = 1,344,559.68
  5. Step 5: Solve for x
    x = 1,344,559.68/1,551.36
  6. Step 6: Final answer
    x = 866.70

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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.