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Finding the Fourth Proportional to 507.61, 700.43 and 286.53

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Solution

The fourth proportional to 507.61, 700.43 and 286.53 is: 395.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.61 : 700.43 = 286.53 : x
  2. Step 2: Convert to fraction form
    507.61/700.43 = 286.53/x
  3. Step 3: Cross multiply
    507.61x = 700.43 × 286.53
  4. Step 4: Simplify right side
    507.61x = 200,694.21
  5. Step 5: Solve for x
    x = 200,694.21/507.61
  6. Step 6: Final answer
    x = 395.37

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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.