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Finding the Fourth Proportional to 364.45, 546.37 and 145.23

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Solution

The fourth proportional to 364.45, 546.37 and 145.23 is: 217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.45 : 546.37 = 145.23 : x
  2. Step 2: Convert to fraction form
    364.45/546.37 = 145.23/x
  3. Step 3: Cross multiply
    364.45x = 546.37 × 145.23
  4. Step 4: Simplify right side
    364.45x = 79,349.32
  5. Step 5: Solve for x
    x = 79,349.32/364.45
  6. Step 6: Final answer
    x = 217.72

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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.