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Finding the Fourth Proportional to 528.75, 729.68 and 295.92

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Solution

The fourth proportional to 528.75, 729.68 and 295.92 is: 408.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.75 : 729.68 = 295.92 : x
  2. Step 2: Convert to fraction form
    528.75/729.68 = 295.92/x
  3. Step 3: Cross multiply
    528.75x = 729.68 × 295.92
  4. Step 4: Simplify right side
    528.75x = 215,925.43
  5. Step 5: Solve for x
    x = 215,925.43/528.75
  6. Step 6: Final answer
    x = 408.37

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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.