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Finding the Fourth Proportional to 917.44, 1,373.82 and 506.12

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Solution

The fourth proportional to 917.44, 1,373.82 and 506.12 is: 757.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.44 : 1,373.82 = 506.12 : x
  2. Step 2: Convert to fraction form
    917.44/1,373.82 = 506.12/x
  3. Step 3: Cross multiply
    917.44x = 1,373.82 × 506.12
  4. Step 4: Simplify right side
    917.44x = 695,320.17
  5. Step 5: Solve for x
    x = 695,320.17/917.44
  6. Step 6: Final answer
    x = 757.89

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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.