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Finding the Fourth Proportional to 615.43, 919.04 and 583.84

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Solution

The fourth proportional to 615.43, 919.04 and 583.84 is: 871.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.43 : 919.04 = 583.84 : x
  2. Step 2: Convert to fraction form
    615.43/919.04 = 583.84/x
  3. Step 3: Cross multiply
    615.43x = 919.04 × 583.84
  4. Step 4: Simplify right side
    615.43x = 536,572.31
  5. Step 5: Solve for x
    x = 536,572.31/615.43
  6. Step 6: Final answer
    x = 871.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.