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Finding the Fourth Proportional to 517.15, 776.11 and 322.44

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Solution

The fourth proportional to 517.15, 776.11 and 322.44 is: 483.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.15 : 776.11 = 322.44 : x
  2. Step 2: Convert to fraction form
    517.15/776.11 = 322.44/x
  3. Step 3: Cross multiply
    517.15x = 776.11 × 322.44
  4. Step 4: Simplify right side
    517.15x = 250,248.10
  5. Step 5: Solve for x
    x = 250,248.10/517.15
  6. Step 6: Final answer
    x = 483.90

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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.