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Finding the Fourth Proportional to 1,589.16, 2,383.62 and 711.30

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Solution

The fourth proportional to 1,589.16, 2,383.62 and 711.30 is: 1,066.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.16 : 2,383.62 = 711.30 : x
  2. Step 2: Convert to fraction form
    1,589.16/2,383.62 = 711.30/x
  3. Step 3: Cross multiply
    1,589.16x = 2,383.62 × 711.30
  4. Step 4: Simplify right side
    1,589.16x = 1,695,468.91
  5. Step 5: Solve for x
    x = 1,695,468.91/1,589.16
  6. Step 6: Final answer
    x = 1,066.90

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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.