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Finding the Fourth Proportional to 914.13, 1,372.41 and 503.46

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Solution

The fourth proportional to 914.13, 1,372.41 and 503.46 is: 755.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.13 : 1,372.41 = 503.46 : x
  2. Step 2: Convert to fraction form
    914.13/1,372.41 = 503.46/x
  3. Step 3: Cross multiply
    914.13x = 1,372.41 × 503.46
  4. Step 4: Simplify right side
    914.13x = 690,953.54
  5. Step 5: Solve for x
    x = 690,953.54/914.13
  6. Step 6: Final answer
    x = 755.86

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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.