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Finding the Fourth Proportional to 607.92, 910.20 and 549.60

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Solution

The fourth proportional to 607.92, 910.20 and 549.60 is: 822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.92 : 910.20 = 549.60 : x
  2. Step 2: Convert to fraction form
    607.92/910.20 = 549.60/x
  3. Step 3: Cross multiply
    607.92x = 910.20 × 549.60
  4. Step 4: Simplify right side
    607.92x = 500,245.92
  5. Step 5: Solve for x
    x = 500,245.92/607.92
  6. Step 6: Final answer
    x = 822.88

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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.