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Finding the Fourth Proportional to 737.17, 1,017.43 and 422.55

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Solution

The fourth proportional to 737.17, 1,017.43 and 422.55 is: 583.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.17 : 1,017.43 = 422.55 : x
  2. Step 2: Convert to fraction form
    737.17/1,017.43 = 422.55/x
  3. Step 3: Cross multiply
    737.17x = 1,017.43 × 422.55
  4. Step 4: Simplify right side
    737.17x = 429,913.99
  5. Step 5: Solve for x
    x = 429,913.99/737.17
  6. Step 6: Final answer
    x = 583.20

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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.