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Finding the Fourth Proportional to 534.34, 801.48 and 209.80

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Solution

The fourth proportional to 534.34, 801.48 and 209.80 is: 314.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.34 : 801.48 = 209.80 : x
  2. Step 2: Convert to fraction form
    534.34/801.48 = 209.80/x
  3. Step 3: Cross multiply
    534.34x = 801.48 × 209.80
  4. Step 4: Simplify right side
    534.34x = 168,150.50
  5. Step 5: Solve for x
    x = 168,150.50/534.34
  6. Step 6: Final answer
    x = 314.69

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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.