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Finding the Fourth Proportional to 468.68, 701.40 and 286.16

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Solution

The fourth proportional to 468.68, 701.40 and 286.16 is: 428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.68 : 701.40 = 286.16 : x
  2. Step 2: Convert to fraction form
    468.68/701.40 = 286.16/x
  3. Step 3: Cross multiply
    468.68x = 701.40 × 286.16
  4. Step 4: Simplify right side
    468.68x = 200,712.62
  5. Step 5: Solve for x
    x = 200,712.62/468.68
  6. Step 6: Final answer
    x = 428.25

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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.