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Finding the Fourth Proportional to 537.80, 802.80 and 455.76

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Solution

The fourth proportional to 537.80, 802.80 and 455.76 is: 680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.80 : 802.80 = 455.76 : x
  2. Step 2: Convert to fraction form
    537.80/802.80 = 455.76/x
  3. Step 3: Cross multiply
    537.80x = 802.80 × 455.76
  4. Step 4: Simplify right side
    537.80x = 365,884.13
  5. Step 5: Solve for x
    x = 365,884.13/537.80
  6. Step 6: Final answer
    x = 680.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.