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Finding the Fourth Proportional to 465.48, 698.28 and 342.51

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Solution

The fourth proportional to 465.48, 698.28 and 342.51 is: 513.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.48 : 698.28 = 342.51 : x
  2. Step 2: Convert to fraction form
    465.48/698.28 = 342.51/x
  3. Step 3: Cross multiply
    465.48x = 698.28 × 342.51
  4. Step 4: Simplify right side
    465.48x = 239,167.88
  5. Step 5: Solve for x
    x = 239,167.88/465.48
  6. Step 6: Final answer
    x = 513.81

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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.