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Finding the Fourth Proportional to 1,132.50, 1,698.77 and 352.53

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Solution

The fourth proportional to 1,132.50, 1,698.77 and 352.53 is: 528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.50 : 1,698.77 = 352.53 : x
  2. Step 2: Convert to fraction form
    1,132.50/1,698.77 = 352.53/x
  3. Step 3: Cross multiply
    1,132.50x = 1,698.77 × 352.53
  4. Step 4: Simplify right side
    1,132.50x = 598,867.39
  5. Step 5: Solve for x
    x = 598,867.39/1,132.50
  6. Step 6: Final answer
    x = 528.80

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Double scale
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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.