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Finding the Fourth Proportional to 882.75, 1,218.09 and 551.04

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Solution

The fourth proportional to 882.75, 1,218.09 and 551.04 is: 760.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.75 : 1,218.09 = 551.04 : x
  2. Step 2: Convert to fraction form
    882.75/1,218.09 = 551.04/x
  3. Step 3: Cross multiply
    882.75x = 1,218.09 × 551.04
  4. Step 4: Simplify right side
    882.75x = 671,216.31
  5. Step 5: Solve for x
    x = 671,216.31/882.75
  6. Step 6: Final answer
    x = 760.37

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1.5x scale

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.