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Finding the Fourth Proportional to 464.59, 641.12 and 254.76

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Solution

The fourth proportional to 464.59, 641.12 and 254.76 is: 351.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.59 : 641.12 = 254.76 : x
  2. Step 2: Convert to fraction form
    464.59/641.12 = 254.76/x
  3. Step 3: Cross multiply
    464.59x = 641.12 × 254.76
  4. Step 4: Simplify right side
    464.59x = 163,331.73
  5. Step 5: Solve for x
    x = 163,331.73/464.59
  6. Step 6: Final answer
    x = 351.56

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Find fourth proportional to 232.30, 320.56 and 127.38
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Double scale
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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.