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Finding the Fourth Proportional to 528.51, 729.34 and 292.48

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Solution

The fourth proportional to 528.51, 729.34 and 292.48 is: 403.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.51 : 729.34 = 292.48 : x
  2. Step 2: Convert to fraction form
    528.51/729.34 = 292.48/x
  3. Step 3: Cross multiply
    528.51x = 729.34 × 292.48
  4. Step 4: Simplify right side
    528.51x = 213,317.36
  5. Step 5: Solve for x
    x = 213,317.36/528.51
  6. Step 6: Final answer
    x = 403.62

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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.