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Finding the Fourth Proportional to 1,688.69, 2,533.25 and 634.85

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Solution

The fourth proportional to 1,688.69, 2,533.25 and 634.85 is: 952.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.69 : 2,533.25 = 634.85 : x
  2. Step 2: Convert to fraction form
    1,688.69/2,533.25 = 634.85/x
  3. Step 3: Cross multiply
    1,688.69x = 2,533.25 × 634.85
  4. Step 4: Simplify right side
    1,688.69x = 1,608,221.10
  5. Step 5: Solve for x
    x = 1,608,221.10/1,688.69
  6. Step 6: Final answer
    x = 952.35

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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.