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Finding the Fourth Proportional to 364.66, 547.17 and 316.78

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Solution

The fourth proportional to 364.66, 547.17 and 316.78 is: 475.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.66 : 547.17 = 316.78 : x
  2. Step 2: Convert to fraction form
    364.66/547.17 = 316.78/x
  3. Step 3: Cross multiply
    364.66x = 547.17 × 316.78
  4. Step 4: Simplify right side
    364.66x = 173,332.51
  5. Step 5: Solve for x
    x = 173,332.51/364.66
  6. Step 6: Final answer
    x = 475.33

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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.