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Finding the Fourth Proportional to 880.16, 1,320.70 and 441.48

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Solution

The fourth proportional to 880.16, 1,320.70 and 441.48 is: 662.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.16 : 1,320.70 = 441.48 : x
  2. Step 2: Convert to fraction form
    880.16/1,320.70 = 441.48/x
  3. Step 3: Cross multiply
    880.16x = 1,320.70 × 441.48
  4. Step 4: Simplify right side
    880.16x = 583,062.64
  5. Step 5: Solve for x
    x = 583,062.64/880.16
  6. Step 6: Final answer
    x = 662.45

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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.