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Finding the Fourth Proportional to 885.93, 1,222.79 and 574.89

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Solution

The fourth proportional to 885.93, 1,222.79 and 574.89 is: 793.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.93 : 1,222.79 = 574.89 : x
  2. Step 2: Convert to fraction form
    885.93/1,222.79 = 574.89/x
  3. Step 3: Cross multiply
    885.93x = 1,222.79 × 574.89
  4. Step 4: Simplify right side
    885.93x = 702,966.87
  5. Step 5: Solve for x
    x = 702,966.87/885.93
  6. Step 6: Final answer
    x = 793.48

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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.