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Finding the Fourth Proportional to 652.08, 978.43 and 286.82

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Solution

The fourth proportional to 652.08, 978.43 and 286.82 is: 430.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.08 : 978.43 = 286.82 : x
  2. Step 2: Convert to fraction form
    652.08/978.43 = 286.82/x
  3. Step 3: Cross multiply
    652.08x = 978.43 × 286.82
  4. Step 4: Simplify right side
    652.08x = 280,629.14
  5. Step 5: Solve for x
    x = 280,629.14/652.08
  6. Step 6: Final answer
    x = 430.36

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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.