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Finding the Fourth Proportional to 506.18, 698.42 and 465.84

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Solution

The fourth proportional to 506.18, 698.42 and 465.84 is: 642.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.18 : 698.42 = 465.84 : x
  2. Step 2: Convert to fraction form
    506.18/698.42 = 465.84/x
  3. Step 3: Cross multiply
    506.18x = 698.42 × 465.84
  4. Step 4: Simplify right side
    506.18x = 325,349.64
  5. Step 5: Solve for x
    x = 325,349.64/506.18
  6. Step 6: Final answer
    x = 642.76

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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.