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Finding the Fourth Proportional to 1,047.31, 1,571 and 584.83

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Solution

The fourth proportional to 1,047.31, 1,571 and 584.83 is: 877.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047.31 : 1,571 = 584.83 : x
  2. Step 2: Convert to fraction form
    1,047.31/1,571 = 584.83/x
  3. Step 3: Cross multiply
    1,047.31x = 1,571 × 584.83
  4. Step 4: Simplify right side
    1,047.31x = 918,767.93
  5. Step 5: Solve for x
    x = 918,767.93/1,047.31
  6. Step 6: Final answer
    x = 877.26

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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.