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Finding the Third Proportional to 528 and 799.13

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Solution

The third proportional to 528 and 799.13 is: 1,209.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528 : 799.13 = 799.13 : x
  2. Step 2: Convert to fraction form
    528/799.13 = 799.13/x
  3. Step 3: Cross multiply
    528x = 799.13 × 799.13
  4. Step 4: Simplify right side
    528x = 638,600.77
  5. Step 5: Solve for x
    x = 638,600.77/528
  6. Step 6: Final answer
    x = 1,209.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.