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Finding the Fourth Proportional to 1,599.16, 2,400.18 and 869.26

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Solution

The fourth proportional to 1,599.16, 2,400.18 and 869.26 is: 1,304.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,599.16 : 2,400.18 = 869.26 : x
  2. Step 2: Convert to fraction form
    1,599.16/2,400.18 = 869.26/x
  3. Step 3: Cross multiply
    1,599.16x = 2,400.18 × 869.26
  4. Step 4: Simplify right side
    1,599.16x = 2,086,380.47
  5. Step 5: Solve for x
    x = 2,086,380.47/1,599.16
  6. Step 6: Final answer
    x = 1,304.67

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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.