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Finding the Fourth Proportional to 1,129.92, 1,695.06 and 552.84

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Solution

The fourth proportional to 1,129.92, 1,695.06 and 552.84 is: 829.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129.92 : 1,695.06 = 552.84 : x
  2. Step 2: Convert to fraction form
    1,129.92/1,695.06 = 552.84/x
  3. Step 3: Cross multiply
    1,129.92x = 1,695.06 × 552.84
  4. Step 4: Simplify right side
    1,129.92x = 937,096.97
  5. Step 5: Solve for x
    x = 937,096.97/1,129.92
  6. Step 6: Final answer
    x = 829.35

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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.