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Finding the Fourth Proportional to 677.18, 934.57 and 382.51

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Solution

The fourth proportional to 677.18, 934.57 and 382.51 is: 527.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.18 : 934.57 = 382.51 : x
  2. Step 2: Convert to fraction form
    677.18/934.57 = 382.51/x
  3. Step 3: Cross multiply
    677.18x = 934.57 × 382.51
  4. Step 4: Simplify right side
    677.18x = 357,475.79
  5. Step 5: Solve for x
    x = 357,475.79/677.18
  6. Step 6: Final answer
    x = 527.89

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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.