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Finding the Fourth Proportional to 666.94, 920.25 and 567.73

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Solution

The fourth proportional to 666.94, 920.25 and 567.73 is: 783.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.94 : 920.25 = 567.73 : x
  2. Step 2: Convert to fraction form
    666.94/920.25 = 567.73/x
  3. Step 3: Cross multiply
    666.94x = 920.25 × 567.73
  4. Step 4: Simplify right side
    666.94x = 522,454.95
  5. Step 5: Solve for x
    x = 522,454.95/666.94
  6. Step 6: Final answer
    x = 783.36

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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.