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Finding the Fourth Proportional to 531.92, 798.36 and 416.80

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Solution

The fourth proportional to 531.92, 798.36 and 416.80 is: 625.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.92 : 798.36 = 416.80 : x
  2. Step 2: Convert to fraction form
    531.92/798.36 = 416.80/x
  3. Step 3: Cross multiply
    531.92x = 798.36 × 416.80
  4. Step 4: Simplify right side
    531.92x = 332,756.45
  5. Step 5: Solve for x
    x = 332,756.45/531.92
  6. Step 6: Final answer
    x = 625.58

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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.