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Finding the Third Proportional to 528 and 770.25

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Solution

The third proportional to 528 and 770.25 is: 1,123.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    528 : 770.25 = 770.25 : x
  2. Step 2: Convert to fraction form
    528/770.25 = 770.25/x
  3. Step 3: Cross multiply
    528x = 770.25 × 770.25
  4. Step 4: Simplify right side
    528x = 593,285.06
  5. Step 5: Solve for x
    x = 593,285.06/528
  6. Step 6: Final answer
    x = 1,123.65

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.