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Finding the Fourth Proportional to 601.20, 829.68 and 368.40

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Solution

The fourth proportional to 601.20, 829.68 and 368.40 is: 508.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.20 : 829.68 = 368.40 : x
  2. Step 2: Convert to fraction form
    601.20/829.68 = 368.40/x
  3. Step 3: Cross multiply
    601.20x = 829.68 × 368.40
  4. Step 4: Simplify right side
    601.20x = 305,654.11
  5. Step 5: Solve for x
    x = 305,654.11/601.20
  6. Step 6: Final answer
    x = 508.41

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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.