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Finding the Fourth Proportional to 885.68, 1,222.14 and 675.99

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Solution

The fourth proportional to 885.68, 1,222.14 and 675.99 is: 932.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.68 : 1,222.14 = 675.99 : x
  2. Step 2: Convert to fraction form
    885.68/1,222.14 = 675.99/x
  3. Step 3: Cross multiply
    885.68x = 1,222.14 × 675.99
  4. Step 4: Simplify right side
    885.68x = 826,154.42
  5. Step 5: Solve for x
    x = 826,154.42/885.68
  6. Step 6: Final answer
    x = 932.80

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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.