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Finding the Fourth Proportional to 706.14, 1,058.76 and 340.92

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Solution

The fourth proportional to 706.14, 1,058.76 and 340.92 is: 511.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.14 : 1,058.76 = 340.92 : x
  2. Step 2: Convert to fraction form
    706.14/1,058.76 = 340.92/x
  3. Step 3: Cross multiply
    706.14x = 1,058.76 × 340.92
  4. Step 4: Simplify right side
    706.14x = 360,952.46
  5. Step 5: Solve for x
    x = 360,952.46/706.14
  6. Step 6: Final answer
    x = 511.16

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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.