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Finding the Fourth Proportional to 615.58, 923.42 and 193.40

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Solution

The fourth proportional to 615.58, 923.42 and 193.40 is: 290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.58 : 923.42 = 193.40 : x
  2. Step 2: Convert to fraction form
    615.58/923.42 = 193.40/x
  3. Step 3: Cross multiply
    615.58x = 923.42 × 193.40
  4. Step 4: Simplify right side
    615.58x = 178,587.67
  5. Step 5: Solve for x
    x = 178,587.67/615.58
  6. Step 6: Final answer
    x = 290.11

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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.