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Finding the Fourth Proportional to 1,165.03, 1,747.62 and 434.60

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Solution

The fourth proportional to 1,165.03, 1,747.62 and 434.60 is: 651.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.03 : 1,747.62 = 434.60 : x
  2. Step 2: Convert to fraction form
    1,165.03/1,747.62 = 434.60/x
  3. Step 3: Cross multiply
    1,165.03x = 1,747.62 × 434.60
  4. Step 4: Simplify right side
    1,165.03x = 759,520.02
  5. Step 5: Solve for x
    x = 759,520.02/1,165.03
  6. Step 6: Final answer
    x = 651.93

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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.