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Finding the Fourth Proportional to 1,102.72, 1,652.40 and 452.68

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Solution

The fourth proportional to 1,102.72, 1,652.40 and 452.68 is: 678.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.72 : 1,652.40 = 452.68 : x
  2. Step 2: Convert to fraction form
    1,102.72/1,652.40 = 452.68/x
  3. Step 3: Cross multiply
    1,102.72x = 1,652.40 × 452.68
  4. Step 4: Simplify right side
    1,102.72x = 748,008.43
  5. Step 5: Solve for x
    x = 748,008.43/1,102.72
  6. Step 6: Final answer
    x = 678.33

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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.