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Finding the Fourth Proportional to 528.12, 726.37 and 512.73

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Solution

The fourth proportional to 528.12, 726.37 and 512.73 is: 705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.12 : 726.37 = 512.73 : x
  2. Step 2: Convert to fraction form
    528.12/726.37 = 512.73/x
  3. Step 3: Cross multiply
    528.12x = 726.37 × 512.73
  4. Step 4: Simplify right side
    528.12x = 372,430.41
  5. Step 5: Solve for x
    x = 372,430.41/528.12
  6. Step 6: Final answer
    x = 705.20

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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.