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Finding the Fourth Proportional to 535.92, 802.80 and 491.64

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Solution

The fourth proportional to 535.92, 802.80 and 491.64 is: 736.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.92 : 802.80 = 491.64 : x
  2. Step 2: Convert to fraction form
    535.92/802.80 = 491.64/x
  3. Step 3: Cross multiply
    535.92x = 802.80 × 491.64
  4. Step 4: Simplify right side
    535.92x = 394,688.59
  5. Step 5: Solve for x
    x = 394,688.59/535.92
  6. Step 6: Final answer
    x = 736.47

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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.