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Finding the Fourth Proportional to 502.80, 664.32 and 502.80

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Solution

The fourth proportional to 502.80, 664.32 and 502.80 is: 664.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.80 : 664.32 = 502.80 : x
  2. Step 2: Convert to fraction form
    502.80/664.32 = 502.80/x
  3. Step 3: Cross multiply
    502.80x = 664.32 × 502.80
  4. Step 4: Simplify right side
    502.80x = 334,020.10
  5. Step 5: Solve for x
    x = 334,020.10/502.80
  6. Step 6: Final answer
    x = 664.32

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.