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Finding the Fourth Proportional to 706.23, 1,058.72 and 267.40

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Solution

The fourth proportional to 706.23, 1,058.72 and 267.40 is: 400.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.23 : 1,058.72 = 267.40 : x
  2. Step 2: Convert to fraction form
    706.23/1,058.72 = 267.40/x
  3. Step 3: Cross multiply
    706.23x = 1,058.72 × 267.40
  4. Step 4: Simplify right side
    706.23x = 283,102.72
  5. Step 5: Solve for x
    x = 283,102.72/706.23
  6. Step 6: Final answer
    x = 400.86

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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.