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Finding the Fourth Proportional to 1,155.81, 1,595.54 and 736.73

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Solution

The fourth proportional to 1,155.81, 1,595.54 and 736.73 is: 1,017.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.81 : 1,595.54 = 736.73 : x
  2. Step 2: Convert to fraction form
    1,155.81/1,595.54 = 736.73/x
  3. Step 3: Cross multiply
    1,155.81x = 1,595.54 × 736.73
  4. Step 4: Simplify right side
    1,155.81x = 1,175,491.01
  5. Step 5: Solve for x
    x = 1,175,491.01/1,155.81
  6. Step 6: Final answer
    x = 1,017.03

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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.