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Finding the Fourth Proportional to 292.48, 403.97 and 290.45

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Solution

The fourth proportional to 292.48, 403.97 and 290.45 is: 401.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.48 : 403.97 = 290.45 : x
  2. Step 2: Convert to fraction form
    292.48/403.97 = 290.45/x
  3. Step 3: Cross multiply
    292.48x = 403.97 × 290.45
  4. Step 4: Simplify right side
    292.48x = 117,332.64
  5. Step 5: Solve for x
    x = 117,332.64/292.48
  6. Step 6: Final answer
    x = 401.17

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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.