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Finding the Fourth Proportional to 368.55, 508.82 and 251.17

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Solution

The fourth proportional to 368.55, 508.82 and 251.17 is: 346.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.55 : 508.82 = 251.17 : x
  2. Step 2: Convert to fraction form
    368.55/508.82 = 251.17/x
  3. Step 3: Cross multiply
    368.55x = 508.82 × 251.17
  4. Step 4: Simplify right side
    368.55x = 127,797.79
  5. Step 5: Solve for x
    x = 127,797.79/368.55
  6. Step 6: Final answer
    x = 346.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.