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Finding the Fourth Proportional to 929.75, 1,394.46 and 700.11

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Solution

The fourth proportional to 929.75, 1,394.46 and 700.11 is: 1,050.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    929.75 : 1,394.46 = 700.11 : x
  2. Step 2: Convert to fraction form
    929.75/1,394.46 = 700.11/x
  3. Step 3: Cross multiply
    929.75x = 1,394.46 × 700.11
  4. Step 4: Simplify right side
    929.75x = 976,275.39
  5. Step 5: Solve for x
    x = 976,275.39/929.75
  6. Step 6: Final answer
    x = 1,050.05

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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.