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Finding the Fourth Proportional to 905.50, 1,249.53 and 532.42

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Solution

The fourth proportional to 905.50, 1,249.53 and 532.42 is: 734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.50 : 1,249.53 = 532.42 : x
  2. Step 2: Convert to fraction form
    905.50/1,249.53 = 532.42/x
  3. Step 3: Cross multiply
    905.50x = 1,249.53 × 532.42
  4. Step 4: Simplify right side
    905.50x = 665,274.76
  5. Step 5: Solve for x
    x = 665,274.76/905.50
  6. Step 6: Final answer
    x = 734.70

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1.5x scale

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.