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Finding the Fourth Proportional to 491.59, 677.88 and 367.05

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Solution

The fourth proportional to 491.59, 677.88 and 367.05 is: 506.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.59 : 677.88 = 367.05 : x
  2. Step 2: Convert to fraction form
    491.59/677.88 = 367.05/x
  3. Step 3: Cross multiply
    491.59x = 677.88 × 367.05
  4. Step 4: Simplify right side
    491.59x = 248,818.40
  5. Step 5: Solve for x
    x = 248,818.40/491.59
  6. Step 6: Final answer
    x = 506.15

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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.