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Finding the Fourth Proportional to 914.36, 1,372.01 and 503.69

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Solution

The fourth proportional to 914.36, 1,372.01 and 503.69 is: 755.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.36 : 1,372.01 = 503.69 : x
  2. Step 2: Convert to fraction form
    914.36/1,372.01 = 503.69/x
  3. Step 3: Cross multiply
    914.36x = 1,372.01 × 503.69
  4. Step 4: Simplify right side
    914.36x = 691,058.34
  5. Step 5: Solve for x
    x = 691,058.34/914.36
  6. Step 6: Final answer
    x = 755.79

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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.