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Finding the Fourth Proportional to 534.70, 802.05 and 328.60

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Solution

The fourth proportional to 534.70, 802.05 and 328.60 is: 492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.70 : 802.05 = 328.60 : x
  2. Step 2: Convert to fraction form
    534.70/802.05 = 328.60/x
  3. Step 3: Cross multiply
    534.70x = 802.05 × 328.60
  4. Step 4: Simplify right side
    534.70x = 263,553.63
  5. Step 5: Solve for x
    x = 263,553.63/534.70
  6. Step 6: Final answer
    x = 492.90

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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.