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Finding the Fourth Proportional to 880.52, 1,320.78 and 495.68

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Solution

The fourth proportional to 880.52, 1,320.78 and 495.68 is: 743.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.52 : 1,320.78 = 495.68 : x
  2. Step 2: Convert to fraction form
    880.52/1,320.78 = 495.68/x
  3. Step 3: Cross multiply
    880.52x = 1,320.78 × 495.68
  4. Step 4: Simplify right side
    880.52x = 654,684.23
  5. Step 5: Solve for x
    x = 654,684.23/880.52
  6. Step 6: Final answer
    x = 743.52

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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.