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Finding the Fourth Proportional to 1,865.20, 2,798.22 and 632.53

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Solution

The fourth proportional to 1,865.20, 2,798.22 and 632.53 is: 948.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.20 : 2,798.22 = 632.53 : x
  2. Step 2: Convert to fraction form
    1,865.20/2,798.22 = 632.53/x
  3. Step 3: Cross multiply
    1,865.20x = 2,798.22 × 632.53
  4. Step 4: Simplify right side
    1,865.20x = 1,769,958.10
  5. Step 5: Solve for x
    x = 1,769,958.10/1,865.20
  6. Step 6: Final answer
    x = 948.94

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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.