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Finding the Fourth Proportional to 356.06, 491.71 and 294.50

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Solution

The fourth proportional to 356.06, 491.71 and 294.50 is: 406.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.06 : 491.71 = 294.50 : x
  2. Step 2: Convert to fraction form
    356.06/491.71 = 294.50/x
  3. Step 3: Cross multiply
    356.06x = 491.71 × 294.50
  4. Step 4: Simplify right side
    356.06x = 144,808.60
  5. Step 5: Solve for x
    x = 144,808.60/356.06
  6. Step 6: Final answer
    x = 406.70

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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.