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Finding the Fourth Proportional to 1,170.16, 1,755.84 and 477.34

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Solution

The fourth proportional to 1,170.16, 1,755.84 and 477.34 is: 716.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.16 : 1,755.84 = 477.34 : x
  2. Step 2: Convert to fraction form
    1,170.16/1,755.84 = 477.34/x
  3. Step 3: Cross multiply
    1,170.16x = 1,755.84 × 477.34
  4. Step 4: Simplify right side
    1,170.16x = 838,132.67
  5. Step 5: Solve for x
    x = 838,132.67/1,170.16
  6. Step 6: Final answer
    x = 716.25

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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.