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Finding the Fourth Proportional to 364.60, 547.60 and 312.66

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Solution

The fourth proportional to 364.60, 547.60 and 312.66 is: 469.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.60 : 547.60 = 312.66 : x
  2. Step 2: Convert to fraction form
    364.60/547.60 = 312.66/x
  3. Step 3: Cross multiply
    364.60x = 547.60 × 312.66
  4. Step 4: Simplify right side
    364.60x = 171,212.62
  5. Step 5: Solve for x
    x = 171,212.62/364.60
  6. Step 6: Final answer
    x = 469.59

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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.