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Finding the Fourth Proportional to 1,047.85, 1,446.03 and 575.74

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Solution

The fourth proportional to 1,047.85, 1,446.03 and 575.74 is: 794.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.85 : 1,446.03 = 575.74 : x
  2. Step 2: Convert to fraction form
    1,047.85/1,446.03 = 575.74/x
  3. Step 3: Cross multiply
    1,047.85x = 1,446.03 × 575.74
  4. Step 4: Simplify right side
    1,047.85x = 832,537.31
  5. Step 5: Solve for x
    x = 832,537.31/1,047.85
  6. Step 6: Final answer
    x = 794.52

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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.