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Finding the Fourth Proportional to 1,347.15, 2,016.34 and 753.19

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Solution

The fourth proportional to 1,347.15, 2,016.34 and 753.19 is: 1,127.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.15 : 2,016.34 = 753.19 : x
  2. Step 2: Convert to fraction form
    1,347.15/2,016.34 = 753.19/x
  3. Step 3: Cross multiply
    1,347.15x = 2,016.34 × 753.19
  4. Step 4: Simplify right side
    1,347.15x = 1,518,687.12
  5. Step 5: Solve for x
    x = 1,518,687.12/1,347.15
  6. Step 6: Final answer
    x = 1,127.33

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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.