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Finding the Fourth Proportional to 1,325.81, 1,829.62 and 736.40

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Solution

The fourth proportional to 1,325.81, 1,829.62 and 736.40 is: 1,016.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.81 : 1,829.62 = 736.40 : x
  2. Step 2: Convert to fraction form
    1,325.81/1,829.62 = 736.40/x
  3. Step 3: Cross multiply
    1,325.81x = 1,829.62 × 736.40
  4. Step 4: Simplify right side
    1,325.81x = 1,347,337.66
  5. Step 5: Solve for x
    x = 1,347,337.66/1,325.81
  6. Step 6: Final answer
    x = 1,016.24

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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.