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Finding the Fourth Proportional to 710.34, 1,064.88 and 344.76

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Solution

The fourth proportional to 710.34, 1,064.88 and 344.76 is: 516.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.34 : 1,064.88 = 344.76 : x
  2. Step 2: Convert to fraction form
    710.34/1,064.88 = 344.76/x
  3. Step 3: Cross multiply
    710.34x = 1,064.88 × 344.76
  4. Step 4: Simplify right side
    710.34x = 367,128.03
  5. Step 5: Solve for x
    x = 367,128.03/710.34
  6. Step 6: Final answer
    x = 516.83

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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.