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Finding the Fourth Proportional to 535.68, 802.72 and 353.12

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Solution

The fourth proportional to 535.68, 802.72 and 353.12 is: 529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.68 : 802.72 = 353.12 : x
  2. Step 2: Convert to fraction form
    535.68/802.72 = 353.12/x
  3. Step 3: Cross multiply
    535.68x = 802.72 × 353.12
  4. Step 4: Simplify right side
    535.68x = 283,456.49
  5. Step 5: Solve for x
    x = 283,456.49/535.68
  6. Step 6: Final answer
    x = 529.15

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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.