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Finding the Fourth Proportional to 368.49, 550.10 and 355.68

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Solution

The fourth proportional to 368.49, 550.10 and 355.68 is: 530.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.49 : 550.10 = 355.68 : x
  2. Step 2: Convert to fraction form
    368.49/550.10 = 355.68/x
  3. Step 3: Cross multiply
    368.49x = 550.10 × 355.68
  4. Step 4: Simplify right side
    368.49x = 195,659.57
  5. Step 5: Solve for x
    x = 195,659.57/368.49
  6. Step 6: Final answer
    x = 530.98

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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.