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Finding the Fourth Proportional to 700.53, 1,050.81 and 213.58

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Solution

The fourth proportional to 700.53, 1,050.81 and 213.58 is: 320.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.53 : 1,050.81 = 213.58 : x
  2. Step 2: Convert to fraction form
    700.53/1,050.81 = 213.58/x
  3. Step 3: Cross multiply
    700.53x = 1,050.81 × 213.58
  4. Step 4: Simplify right side
    700.53x = 224,432.00
  5. Step 5: Solve for x
    x = 224,432.00/700.53
  6. Step 6: Final answer
    x = 320.37

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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.