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Finding the Fourth Proportional to 1,585.27, 2,376.27 and 661.37

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Solution

The fourth proportional to 1,585.27, 2,376.27 and 661.37 is: 991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.27 : 2,376.27 = 661.37 : x
  2. Step 2: Convert to fraction form
    1,585.27/2,376.27 = 661.37/x
  3. Step 3: Cross multiply
    1,585.27x = 2,376.27 × 661.37
  4. Step 4: Simplify right side
    1,585.27x = 1,571,581.81
  5. Step 5: Solve for x
    x = 1,571,581.81/1,585.27
  6. Step 6: Final answer
    x = 991.36

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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.