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Finding the Fourth Proportional to 1,047.81, 1,569.48 and 552.66

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Solution

The fourth proportional to 1,047.81, 1,569.48 and 552.66 is: 827.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.81 : 1,569.48 = 552.66 : x
  2. Step 2: Convert to fraction form
    1,047.81/1,569.48 = 552.66/x
  3. Step 3: Cross multiply
    1,047.81x = 1,569.48 × 552.66
  4. Step 4: Simplify right side
    1,047.81x = 867,378.90
  5. Step 5: Solve for x
    x = 867,378.90/1,047.81
  6. Step 6: Final answer
    x = 827.80

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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.