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Finding the Fourth Proportional to 619.60, 928.75 and 482.24

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Solution

The fourth proportional to 619.60, 928.75 and 482.24 is: 722.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.60 : 928.75 = 482.24 : x
  2. Step 2: Convert to fraction form
    619.60/928.75 = 482.24/x
  3. Step 3: Cross multiply
    619.60x = 928.75 × 482.24
  4. Step 4: Simplify right side
    619.60x = 447,880.40
  5. Step 5: Solve for x
    x = 447,880.40/619.60
  6. Step 6: Final answer
    x = 722.85

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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.