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Finding the Fourth Proportional to 940.63, 1,298.22 and 567.66

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Solution

The fourth proportional to 940.63, 1,298.22 and 567.66 is: 783.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    940.63 : 1,298.22 = 567.66 : x
  2. Step 2: Convert to fraction form
    940.63/1,298.22 = 567.66/x
  3. Step 3: Cross multiply
    940.63x = 1,298.22 × 567.66
  4. Step 4: Simplify right side
    940.63x = 736,947.57
  5. Step 5: Solve for x
    x = 736,947.57/940.63
  6. Step 6: Final answer
    x = 783.47

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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.