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Finding the Fourth Proportional to 615.14, 922.13 and 322.58

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Solution

The fourth proportional to 615.14, 922.13 and 322.58 is: 483.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.14 : 922.13 = 322.58 : x
  2. Step 2: Convert to fraction form
    615.14/922.13 = 322.58/x
  3. Step 3: Cross multiply
    615.14x = 922.13 × 322.58
  4. Step 4: Simplify right side
    615.14x = 297,456.89
  5. Step 5: Solve for x
    x = 297,456.89/615.14
  6. Step 6: Final answer
    x = 483.56

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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.