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Finding the Fourth Proportional to 364.88, 546.61 and 287.43

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Solution

The fourth proportional to 364.88, 546.61 and 287.43 is: 430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.88 : 546.61 = 287.43 : x
  2. Step 2: Convert to fraction form
    364.88/546.61 = 287.43/x
  3. Step 3: Cross multiply
    364.88x = 546.61 × 287.43
  4. Step 4: Simplify right side
    364.88x = 157,112.11
  5. Step 5: Solve for x
    x = 157,112.11/364.88
  6. Step 6: Final answer
    x = 430.59

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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.