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Finding the Fourth Proportional to 491.76, 677.88 and 334.08

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Solution

The fourth proportional to 491.76, 677.88 and 334.08 is: 460.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.76 : 677.88 = 334.08 : x
  2. Step 2: Convert to fraction form
    491.76/677.88 = 334.08/x
  3. Step 3: Cross multiply
    491.76x = 677.88 × 334.08
  4. Step 4: Simplify right side
    491.76x = 226,466.15
  5. Step 5: Solve for x
    x = 226,466.15/491.76
  6. Step 6: Final answer
    x = 460.52

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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.