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Finding the Fourth Proportional to 1,148.25, 1,584.95 and 734.25

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Solution

The fourth proportional to 1,148.25, 1,584.95 and 734.25 is: 1,013.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.25 : 1,584.95 = 734.25 : x
  2. Step 2: Convert to fraction form
    1,148.25/1,584.95 = 734.25/x
  3. Step 3: Cross multiply
    1,148.25x = 1,584.95 × 734.25
  4. Step 4: Simplify right side
    1,148.25x = 1,163,749.54
  5. Step 5: Solve for x
    x = 1,163,749.54/1,148.25
  6. Step 6: Final answer
    x = 1,013.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.