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Finding the Fourth Proportional to 1,314.59, 1,814.07 and 754.66

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Solution

The fourth proportional to 1,314.59, 1,814.07 and 754.66 is: 1,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.59 : 1,814.07 = 754.66 : x
  2. Step 2: Convert to fraction form
    1,314.59/1,814.07 = 754.66/x
  3. Step 3: Cross multiply
    1,314.59x = 1,814.07 × 754.66
  4. Step 4: Simplify right side
    1,314.59x = 1,369,008.33
  5. Step 5: Solve for x
    x = 1,369,008.33/1,314.59
  6. Step 6: Final answer
    x = 1,041.40

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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.