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Finding the Fourth Proportional to 700.71, 1,050.44 and 289.59

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Solution

The fourth proportional to 700.71, 1,050.44 and 289.59 is: 434.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.71 : 1,050.44 = 289.59 : x
  2. Step 2: Convert to fraction form
    700.71/1,050.44 = 289.59/x
  3. Step 3: Cross multiply
    700.71x = 1,050.44 × 289.59
  4. Step 4: Simplify right side
    700.71x = 304,191.31
  5. Step 5: Solve for x
    x = 304,191.31/700.71
  6. Step 6: Final answer
    x = 434.12

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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.