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Finding the Fourth Proportional to 1,158.01, 1,736.97 and 427.27

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Solution

The fourth proportional to 1,158.01, 1,736.97 and 427.27 is: 640.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.01 : 1,736.97 = 427.27 : x
  2. Step 2: Convert to fraction form
    1,158.01/1,736.97 = 427.27/x
  3. Step 3: Cross multiply
    1,158.01x = 1,736.97 × 427.27
  4. Step 4: Simplify right side
    1,158.01x = 742,155.17
  5. Step 5: Solve for x
    x = 742,155.17/1,158.01
  6. Step 6: Final answer
    x = 640.89

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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.