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Finding the Fourth Proportional to 579.08, 869.58 and 554.12

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Solution

The fourth proportional to 579.08, 869.58 and 554.12 is: 832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.08 : 869.58 = 554.12 : x
  2. Step 2: Convert to fraction form
    579.08/869.58 = 554.12/x
  3. Step 3: Cross multiply
    579.08x = 869.58 × 554.12
  4. Step 4: Simplify right side
    579.08x = 481,851.67
  5. Step 5: Solve for x
    x = 481,851.67/579.08
  6. Step 6: Final answer
    x = 832.10

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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.