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Finding the Fourth Proportional to 1,190.58, 1,643.19 and 910.27

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Solution

The fourth proportional to 1,190.58, 1,643.19 and 910.27 is: 1,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.58 : 1,643.19 = 910.27 : x
  2. Step 2: Convert to fraction form
    1,190.58/1,643.19 = 910.27/x
  3. Step 3: Cross multiply
    1,190.58x = 1,643.19 × 910.27
  4. Step 4: Simplify right side
    1,190.58x = 1,495,742.01
  5. Step 5: Solve for x
    x = 1,495,742.01/1,190.58
  6. Step 6: Final answer
    x = 1,256.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.