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Finding the Fourth Proportional to 917.14, 1,373.01 and 608.14

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Solution

The fourth proportional to 917.14, 1,373.01 and 608.14 is: 910.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.14 : 1,373.01 = 608.14 : x
  2. Step 2: Convert to fraction form
    917.14/1,373.01 = 608.14/x
  3. Step 3: Cross multiply
    917.14x = 1,373.01 × 608.14
  4. Step 4: Simplify right side
    917.14x = 834,982.30
  5. Step 5: Solve for x
    x = 834,982.30/917.14
  6. Step 6: Final answer
    x = 910.42

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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.