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Finding the Fourth Proportional to 763.64, 1,144.19 and 735.20

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Solution

The fourth proportional to 763.64, 1,144.19 and 735.20 is: 1,101.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    763.64 : 1,144.19 = 735.20 : x
  2. Step 2: Convert to fraction form
    763.64/1,144.19 = 735.20/x
  3. Step 3: Cross multiply
    763.64x = 1,144.19 × 735.20
  4. Step 4: Simplify right side
    763.64x = 841,203.38
  5. Step 5: Solve for x
    x = 841,203.38/763.64
  6. Step 6: Final answer
    x = 1,101.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.