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Finding the Fourth Proportional to 913.84, 1,369.80 and 336.52

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Solution

The fourth proportional to 913.84, 1,369.80 and 336.52 is: 504.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.84 : 1,369.80 = 336.52 : x
  2. Step 2: Convert to fraction form
    913.84/1,369.80 = 336.52/x
  3. Step 3: Cross multiply
    913.84x = 1,369.80 × 336.52
  4. Step 4: Simplify right side
    913.84x = 460,965.10
  5. Step 5: Solve for x
    x = 460,965.10/913.84
  6. Step 6: Final answer
    x = 504.43

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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.