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Finding the Fourth Proportional to 615.19, 923.19 and 290.58

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Solution

The fourth proportional to 615.19, 923.19 and 290.58 is: 436.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.19 : 923.19 = 290.58 : x
  2. Step 2: Convert to fraction form
    615.19/923.19 = 290.58/x
  3. Step 3: Cross multiply
    615.19x = 923.19 × 290.58
  4. Step 4: Simplify right side
    615.19x = 268,260.55
  5. Step 5: Solve for x
    x = 268,260.55/615.19
  6. Step 6: Final answer
    x = 436.06

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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.