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Finding the Fourth Proportional to 615.16, 923.28 and 322.87

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Solution

The fourth proportional to 615.16, 923.28 and 322.87 is: 484.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.16 : 923.28 = 322.87 : x
  2. Step 2: Convert to fraction form
    615.16/923.28 = 322.87/x
  3. Step 3: Cross multiply
    615.16x = 923.28 × 322.87
  4. Step 4: Simplify right side
    615.16x = 298,099.72
  5. Step 5: Solve for x
    x = 298,099.72/615.16
  6. Step 6: Final answer
    x = 484.59

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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.