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Finding the Fourth Proportional to 677.29, 935.01 and 428.86

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Solution

The fourth proportional to 677.29, 935.01 and 428.86 is: 592.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.29 : 935.01 = 428.86 : x
  2. Step 2: Convert to fraction form
    677.29/935.01 = 428.86/x
  3. Step 3: Cross multiply
    677.29x = 935.01 × 428.86
  4. Step 4: Simplify right side
    677.29x = 400,986.24
  5. Step 5: Solve for x
    x = 400,986.24/677.29
  6. Step 6: Final answer
    x = 592.05

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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.