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Finding the Fourth Proportional to 1,666.14, 2,499.36 and 433.54

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Solution

The fourth proportional to 1,666.14, 2,499.36 and 433.54 is: 650.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.14 : 2,499.36 = 433.54 : x
  2. Step 2: Convert to fraction form
    1,666.14/2,499.36 = 433.54/x
  3. Step 3: Cross multiply
    1,666.14x = 2,499.36 × 433.54
  4. Step 4: Simplify right side
    1,666.14x = 1,083,572.53
  5. Step 5: Solve for x
    x = 1,083,572.53/1,666.14
  6. Step 6: Final answer
    x = 650.35

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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.