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Finding the Fourth Proportional to 1,183.52, 1,633.20 and 652.40

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Solution

The fourth proportional to 1,183.52, 1,633.20 and 652.40 is: 900.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.52 : 1,633.20 = 652.40 : x
  2. Step 2: Convert to fraction form
    1,183.52/1,633.20 = 652.40/x
  3. Step 3: Cross multiply
    1,183.52x = 1,633.20 × 652.40
  4. Step 4: Simplify right side
    1,183.52x = 1,065,491.51
  5. Step 5: Solve for x
    x = 1,065,491.51/1,183.52
  6. Step 6: Final answer
    x = 900.28

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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.