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Finding the Fourth Proportional to 888.01, 1,325.42 and 784.21

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Solution

The fourth proportional to 888.01, 1,325.42 and 784.21 is: 1,170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.01 : 1,325.42 = 784.21 : x
  2. Step 2: Convert to fraction form
    888.01/1,325.42 = 784.21/x
  3. Step 3: Cross multiply
    888.01x = 1,325.42 × 784.21
  4. Step 4: Simplify right side
    888.01x = 1,039,407.62
  5. Step 5: Solve for x
    x = 1,039,407.62/888.01
  6. Step 6: Final answer
    x = 1,170.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.