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Finding the Fourth Proportional to 1,347.65, 2,019.66 and 1,018.31

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Solution

The fourth proportional to 1,347.65, 2,019.66 and 1,018.31 is: 1,526.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.65 : 2,019.66 = 1,018.31 : x
  2. Step 2: Convert to fraction form
    1,347.65/2,019.66 = 1,018.31/x
  3. Step 3: Cross multiply
    1,347.65x = 2,019.66 × 1,018.31
  4. Step 4: Simplify right side
    1,347.65x = 2,056,639.97
  5. Step 5: Solve for x
    x = 2,056,639.97/1,347.65
  6. Step 6: Final answer
    x = 1,526.09

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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.