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Finding the Fourth Proportional to 528.25, 729.03 and 292.25

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Solution

The fourth proportional to 528.25, 729.03 and 292.25 is: 403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.25 : 729.03 = 292.25 : x
  2. Step 2: Convert to fraction form
    528.25/729.03 = 292.25/x
  3. Step 3: Cross multiply
    528.25x = 729.03 × 292.25
  4. Step 4: Simplify right side
    528.25x = 213,055.37
  5. Step 5: Solve for x
    x = 213,055.37/528.25
  6. Step 6: Final answer
    x = 403.33

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1.5x scale

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.