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Finding the Fourth Proportional to 502.55, 693.59 and 281.52

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Solution

The fourth proportional to 502.55, 693.59 and 281.52 is: 388.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.55 : 693.59 = 281.52 : x
  2. Step 2: Convert to fraction form
    502.55/693.59 = 281.52/x
  3. Step 3: Cross multiply
    502.55x = 693.59 × 281.52
  4. Step 4: Simplify right side
    502.55x = 195,258.05
  5. Step 5: Solve for x
    x = 195,258.05/502.55
  6. Step 6: Final answer
    x = 388.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.