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Finding the Fourth Proportional to 1,167.19, 1,750.79 and 436.25

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Solution

The fourth proportional to 1,167.19, 1,750.79 and 436.25 is: 654.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.19 : 1,750.79 = 436.25 : x
  2. Step 2: Convert to fraction form
    1,167.19/1,750.79 = 436.25/x
  3. Step 3: Cross multiply
    1,167.19x = 1,750.79 × 436.25
  4. Step 4: Simplify right side
    1,167.19x = 763,785.15
  5. Step 5: Solve for x
    x = 763,785.15/1,167.19
  6. Step 6: Final answer
    x = 654.38

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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.