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Finding the Fourth Proportional to 677.40, 933.93 and 552.84

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Solution

The fourth proportional to 677.40, 933.93 and 552.84 is: 762.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.40 : 933.93 = 552.84 : x
  2. Step 2: Convert to fraction form
    677.40/933.93 = 552.84/x
  3. Step 3: Cross multiply
    677.40x = 933.93 × 552.84
  4. Step 4: Simplify right side
    677.40x = 516,313.86
  5. Step 5: Solve for x
    x = 516,313.86/677.40
  6. Step 6: Final answer
    x = 762.20

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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.