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Finding the Fourth Proportional to 624.79, 862.17 and 359.04

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Solution

The fourth proportional to 624.79, 862.17 and 359.04 is: 495.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.79 : 862.17 = 359.04 : x
  2. Step 2: Convert to fraction form
    624.79/862.17 = 359.04/x
  3. Step 3: Cross multiply
    624.79x = 862.17 × 359.04
  4. Step 4: Simplify right side
    624.79x = 309,554.05
  5. Step 5: Solve for x
    x = 309,554.05/624.79
  6. Step 6: Final answer
    x = 495.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.