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Finding the Fourth Proportional to 580.50, 866.88 and 488.43

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Solution

The fourth proportional to 580.50, 866.88 and 488.43 is: 729.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.50 : 866.88 = 488.43 : x
  2. Step 2: Convert to fraction form
    580.50/866.88 = 488.43/x
  3. Step 3: Cross multiply
    580.50x = 866.88 × 488.43
  4. Step 4: Simplify right side
    580.50x = 423,410.20
  5. Step 5: Solve for x
    x = 423,410.20/580.50
  6. Step 6: Final answer
    x = 729.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.