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Finding the Fourth Proportional to 1,149.19, 1,585.98 and 651.85

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Solution

The fourth proportional to 1,149.19, 1,585.98 and 651.85 is: 899.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.19 : 1,585.98 = 651.85 : x
  2. Step 2: Convert to fraction form
    1,149.19/1,585.98 = 651.85/x
  3. Step 3: Cross multiply
    1,149.19x = 1,585.98 × 651.85
  4. Step 4: Simplify right side
    1,149.19x = 1,033,817.10
  5. Step 5: Solve for x
    x = 1,033,817.10/1,149.19
  6. Step 6: Final answer
    x = 899.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.