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Finding the Fourth Proportional to 356.34, 491.72 and 201.08

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Solution

The fourth proportional to 356.34, 491.72 and 201.08 is: 277.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.34 : 491.72 = 201.08 : x
  2. Step 2: Convert to fraction form
    356.34/491.72 = 201.08/x
  3. Step 3: Cross multiply
    356.34x = 491.72 × 201.08
  4. Step 4: Simplify right side
    356.34x = 98,875.06
  5. Step 5: Solve for x
    x = 98,875.06/356.34
  6. Step 6: Final answer
    x = 277.47

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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.