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Finding the Fourth Proportional to 700.71, 1,051.23 and 495.69

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Solution

The fourth proportional to 700.71, 1,051.23 and 495.69 is: 743.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.71 : 1,051.23 = 495.69 : x
  2. Step 2: Convert to fraction form
    700.71/1,051.23 = 495.69/x
  3. Step 3: Cross multiply
    700.71x = 1,051.23 × 495.69
  4. Step 4: Simplify right side
    700.71x = 521,084.20
  5. Step 5: Solve for x
    x = 521,084.20/700.71
  6. Step 6: Final answer
    x = 743.65

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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.