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Finding the Fourth Proportional to 1,168.35, 1,752.75 and 398.85

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Solution

The fourth proportional to 1,168.35, 1,752.75 and 398.85 is: 598.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.35 : 1,752.75 = 398.85 : x
  2. Step 2: Convert to fraction form
    1,168.35/1,752.75 = 398.85/x
  3. Step 3: Cross multiply
    1,168.35x = 1,752.75 × 398.85
  4. Step 4: Simplify right side
    1,168.35x = 699,084.34
  5. Step 5: Solve for x
    x = 699,084.34/1,168.35
  6. Step 6: Final answer
    x = 598.35

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1.5x scale

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.