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Finding the Fourth Proportional to 882.58, 1,217.61 and 551.23

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Solution

The fourth proportional to 882.58, 1,217.61 and 551.23 is: 760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.58 : 1,217.61 = 551.23 : x
  2. Step 2: Convert to fraction form
    882.58/1,217.61 = 551.23/x
  3. Step 3: Cross multiply
    882.58x = 1,217.61 × 551.23
  4. Step 4: Simplify right side
    882.58x = 671,183.16
  5. Step 5: Solve for x
    x = 671,183.16/882.58
  6. Step 6: Final answer
    x = 760.48

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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.