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Finding the Fourth Proportional to 880.68, 1,321.84 and 448.16

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Solution

The fourth proportional to 880.68, 1,321.84 and 448.16 is: 672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.68 : 1,321.84 = 448.16 : x
  2. Step 2: Convert to fraction form
    880.68/1,321.84 = 448.16/x
  3. Step 3: Cross multiply
    880.68x = 1,321.84 × 448.16
  4. Step 4: Simplify right side
    880.68x = 592,395.81
  5. Step 5: Solve for x
    x = 592,395.81/880.68
  6. Step 6: Final answer
    x = 672.66

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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.