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Finding the Fourth Proportional to 1,324.48, 1,826.88 and 772.48

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Solution

The fourth proportional to 1,324.48, 1,826.88 and 772.48 is: 1,065.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.48 : 1,826.88 = 772.48 : x
  2. Step 2: Convert to fraction form
    1,324.48/1,826.88 = 772.48/x
  3. Step 3: Cross multiply
    1,324.48x = 1,826.88 × 772.48
  4. Step 4: Simplify right side
    1,324.48x = 1,411,228.26
  5. Step 5: Solve for x
    x = 1,411,228.26/1,324.48
  6. Step 6: Final answer
    x = 1,065.50

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1.5x scale

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.