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Finding the Fourth Proportional to 801.55, 1,202.15 and 368.29

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Solution

The fourth proportional to 801.55, 1,202.15 and 368.29 is: 552.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.55 : 1,202.15 = 368.29 : x
  2. Step 2: Convert to fraction form
    801.55/1,202.15 = 368.29/x
  3. Step 3: Cross multiply
    801.55x = 1,202.15 × 368.29
  4. Step 4: Simplify right side
    801.55x = 442,737.98
  5. Step 5: Solve for x
    x = 442,737.98/801.55
  6. Step 6: Final answer
    x = 552.35

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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.