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Finding the Fourth Proportional to 770.96, 1,064.04 and 535.28

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Solution

The fourth proportional to 770.96, 1,064.04 and 535.28 is: 738.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.96 : 1,064.04 = 535.28 : x
  2. Step 2: Convert to fraction form
    770.96/1,064.04 = 535.28/x
  3. Step 3: Cross multiply
    770.96x = 1,064.04 × 535.28
  4. Step 4: Simplify right side
    770.96x = 569,559.33
  5. Step 5: Solve for x
    x = 569,559.33/770.96
  6. Step 6: Final answer
    x = 738.77

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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.