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Finding the Fourth Proportional to 1,003.81, 1,506.28 and 541.57

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Solution

The fourth proportional to 1,003.81, 1,506.28 and 541.57 is: 812.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003.81 : 1,506.28 = 541.57 : x
  2. Step 2: Convert to fraction form
    1,003.81/1,506.28 = 541.57/x
  3. Step 3: Cross multiply
    1,003.81x = 1,506.28 × 541.57
  4. Step 4: Simplify right side
    1,003.81x = 815,756.06
  5. Step 5: Solve for x
    x = 815,756.06/1,003.81
  6. Step 6: Final answer
    x = 812.66

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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.