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Finding the Fourth Proportional to 615.96, 928.44 and 580.68

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Solution

The fourth proportional to 615.96, 928.44 and 580.68 is: 875.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.96 : 928.44 = 580.68 : x
  2. Step 2: Convert to fraction form
    615.96/928.44 = 580.68/x
  3. Step 3: Cross multiply
    615.96x = 928.44 × 580.68
  4. Step 4: Simplify right side
    615.96x = 539,126.54
  5. Step 5: Solve for x
    x = 539,126.54/615.96
  6. Step 6: Final answer
    x = 875.26

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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.