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Finding the Fourth Proportional to 803.40, 1,202.70 and 803.40

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Solution

The fourth proportional to 803.40, 1,202.70 and 803.40 is: 1,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.40 : 1,202.70 = 803.40 : x
  2. Step 2: Convert to fraction form
    803.40/1,202.70 = 803.40/x
  3. Step 3: Cross multiply
    803.40x = 1,202.70 × 803.40
  4. Step 4: Simplify right side
    803.40x = 966,249.18
  5. Step 5: Solve for x
    x = 966,249.18/803.40
  6. Step 6: Final answer
    x = 1,202.70

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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.