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Finding the Fourth Proportional to 882.59, 1,323.43 and 388.80

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Solution

The fourth proportional to 882.59, 1,323.43 and 388.80 is: 583.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.59 : 1,323.43 = 388.80 : x
  2. Step 2: Convert to fraction form
    882.59/1,323.43 = 388.80/x
  3. Step 3: Cross multiply
    882.59x = 1,323.43 × 388.80
  4. Step 4: Simplify right side
    882.59x = 514,549.58
  5. Step 5: Solve for x
    x = 514,549.58/882.59
  6. Step 6: Final answer
    x = 583.00

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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.