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Finding the Fourth Proportional to 1,130.39, 1,696.22 and 472.75

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Solution

The fourth proportional to 1,130.39, 1,696.22 and 472.75 is: 709.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.39 : 1,696.22 = 472.75 : x
  2. Step 2: Convert to fraction form
    1,130.39/1,696.22 = 472.75/x
  3. Step 3: Cross multiply
    1,130.39x = 1,696.22 × 472.75
  4. Step 4: Simplify right side
    1,130.39x = 801,883.17
  5. Step 5: Solve for x
    x = 801,883.17/1,130.39
  6. Step 6: Final answer
    x = 709.39

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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.