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Finding the Fourth Proportional to 1,487.66, 2,230.11 and 1,364.64

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Solution

The fourth proportional to 1,487.66, 2,230.11 and 1,364.64 is: 2,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.66 : 2,230.11 = 1,364.64 : x
  2. Step 2: Convert to fraction form
    1,487.66/2,230.11 = 1,364.64/x
  3. Step 3: Cross multiply
    1,487.66x = 2,230.11 × 1,364.64
  4. Step 4: Simplify right side
    1,487.66x = 3,043,297.31
  5. Step 5: Solve for x
    x = 3,043,297.31/1,487.66
  6. Step 6: Final answer
    x = 2,045.70

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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.