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Finding the Fourth Proportional to 912.24, 1,367.10 and 522.45

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Solution

The fourth proportional to 912.24, 1,367.10 and 522.45 is: 782.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.24 : 1,367.10 = 522.45 : x
  2. Step 2: Convert to fraction form
    912.24/1,367.10 = 522.45/x
  3. Step 3: Cross multiply
    912.24x = 1,367.10 × 522.45
  4. Step 4: Simplify right side
    912.24x = 714,241.40
  5. Step 5: Solve for x
    x = 714,241.40/912.24
  6. Step 6: Final answer
    x = 782.95

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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.