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Finding the Fourth Proportional to 1,170.59, 1,755.66 and 440.01

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Solution

The fourth proportional to 1,170.59, 1,755.66 and 440.01 is: 659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.59 : 1,755.66 = 440.01 : x
  2. Step 2: Convert to fraction form
    1,170.59/1,755.66 = 440.01/x
  3. Step 3: Cross multiply
    1,170.59x = 1,755.66 × 440.01
  4. Step 4: Simplify right side
    1,170.59x = 772,507.96
  5. Step 5: Solve for x
    x = 772,507.96/1,170.59
  6. Step 6: Final answer
    x = 659.93

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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.