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Finding the Fourth Proportional to 773.32, 1,066.75 and 552.39

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Solution

The fourth proportional to 773.32, 1,066.75 and 552.39 is: 761.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.32 : 1,066.75 = 552.39 : x
  2. Step 2: Convert to fraction form
    773.32/1,066.75 = 552.39/x
  3. Step 3: Cross multiply
    773.32x = 1,066.75 × 552.39
  4. Step 4: Simplify right side
    773.32x = 589,262.03
  5. Step 5: Solve for x
    x = 589,262.03/773.32
  6. Step 6: Final answer
    x = 761.99

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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.