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Finding the Fourth Proportional to 368.45, 548.15 and 346.58

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Solution

The fourth proportional to 368.45, 548.15 and 346.58 is: 515.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.45 : 548.15 = 346.58 : x
  2. Step 2: Convert to fraction form
    368.45/548.15 = 346.58/x
  3. Step 3: Cross multiply
    368.45x = 548.15 × 346.58
  4. Step 4: Simplify right side
    368.45x = 189,978.82
  5. Step 5: Solve for x
    x = 189,978.82/368.45
  6. Step 6: Final answer
    x = 515.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.