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Finding the Fourth Proportional to 1,046.72, 1,444.56 and 581

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Solution

The fourth proportional to 1,046.72, 1,444.56 and 581 is: 801.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.72 : 1,444.56 = 581 : x
  2. Step 2: Convert to fraction form
    1,046.72/1,444.56 = 581/x
  3. Step 3: Cross multiply
    1,046.72x = 1,444.56 × 581
  4. Step 4: Simplify right side
    1,046.72x = 839,289.36
  5. Step 5: Solve for x
    x = 839,289.36/1,046.72
  6. Step 6: Final answer
    x = 801.83

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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.