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Finding the Fourth Proportional to 364.46, 548.06 and 309.78

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Solution

The fourth proportional to 364.46, 548.06 and 309.78 is: 465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.46 : 548.06 = 309.78 : x
  2. Step 2: Convert to fraction form
    364.46/548.06 = 309.78/x
  3. Step 3: Cross multiply
    364.46x = 548.06 × 309.78
  4. Step 4: Simplify right side
    364.46x = 169,776.48
  5. Step 5: Solve for x
    x = 169,776.48/364.46
  6. Step 6: Final answer
    x = 465.84

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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.