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Finding the Fourth Proportional to 1,303.08, 1,952.42 and 789

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Solution

The fourth proportional to 1,303.08, 1,952.42 and 789 is: 1,182.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.08 : 1,952.42 = 789 : x
  2. Step 2: Convert to fraction form
    1,303.08/1,952.42 = 789/x
  3. Step 3: Cross multiply
    1,303.08x = 1,952.42 × 789
  4. Step 4: Simplify right side
    1,303.08x = 1,540,459.38
  5. Step 5: Solve for x
    x = 1,540,459.38/1,303.08
  6. Step 6: Final answer
    x = 1,182.17

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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.