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Finding the Fourth Proportional to 752.60, 1,036.73 and 654.19

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Solution

The fourth proportional to 752.60, 1,036.73 and 654.19 is: 901.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.60 : 1,036.73 = 654.19 : x
  2. Step 2: Convert to fraction form
    752.60/1,036.73 = 654.19/x
  3. Step 3: Cross multiply
    752.60x = 1,036.73 × 654.19
  4. Step 4: Simplify right side
    752.60x = 678,217.44
  5. Step 5: Solve for x
    x = 678,217.44/752.60
  6. Step 6: Final answer
    x = 901.16

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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.