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Finding the Fourth Proportional to 912.63, 1,369.26 and 501.24

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Solution

The fourth proportional to 912.63, 1,369.26 and 501.24 is: 752.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.63 : 1,369.26 = 501.24 : x
  2. Step 2: Convert to fraction form
    912.63/1,369.26 = 501.24/x
  3. Step 3: Cross multiply
    912.63x = 1,369.26 × 501.24
  4. Step 4: Simplify right side
    912.63x = 686,327.88
  5. Step 5: Solve for x
    x = 686,327.88/912.63
  6. Step 6: Final answer
    x = 752.03

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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.