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Finding the Fourth Proportional to 700.98, 1,051.40 and 214.03

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Solution

The fourth proportional to 700.98, 1,051.40 and 214.03 is: 321.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.98 : 1,051.40 = 214.03 : x
  2. Step 2: Convert to fraction form
    700.98/1,051.40 = 214.03/x
  3. Step 3: Cross multiply
    700.98x = 1,051.40 × 214.03
  4. Step 4: Simplify right side
    700.98x = 225,031.14
  5. Step 5: Solve for x
    x = 225,031.14/700.98
  6. Step 6: Final answer
    x = 321.02

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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.