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Finding the Fourth Proportional to 579.83, 873.92 and 499.64

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Solution

The fourth proportional to 579.83, 873.92 and 499.64 is: 753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.83 : 873.92 = 499.64 : x
  2. Step 2: Convert to fraction form
    579.83/873.92 = 499.64/x
  3. Step 3: Cross multiply
    579.83x = 873.92 × 499.64
  4. Step 4: Simplify right side
    579.83x = 436,638.52
  5. Step 5: Solve for x
    x = 436,638.52/579.83
  6. Step 6: Final answer
    x = 753.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.