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Finding the Fourth Proportional to 465.48, 699.84 and 429.84

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Solution

The fourth proportional to 465.48, 699.84 and 429.84 is: 646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.48 : 699.84 = 429.84 : x
  2. Step 2: Convert to fraction form
    465.48/699.84 = 429.84/x
  3. Step 3: Cross multiply
    465.48x = 699.84 × 429.84
  4. Step 4: Simplify right side
    465.48x = 300,819.23
  5. Step 5: Solve for x
    x = 300,819.23/465.48
  6. Step 6: Final answer
    x = 646.26

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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.