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Finding the Fourth Proportional to 349.02, 480.55 and 296.45

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Solution

The fourth proportional to 349.02, 480.55 and 296.45 is: 408.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.02 : 480.55 = 296.45 : x
  2. Step 2: Convert to fraction form
    349.02/480.55 = 296.45/x
  3. Step 3: Cross multiply
    349.02x = 480.55 × 296.45
  4. Step 4: Simplify right side
    349.02x = 142,459.51
  5. Step 5: Solve for x
    x = 142,459.51/349.02
  6. Step 6: Final answer
    x = 408.17

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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.