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Finding the Fourth Proportional to 709.97, 1,064.95 and 223.06

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Solution

The fourth proportional to 709.97, 1,064.95 and 223.06 is: 334.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.97 : 1,064.95 = 223.06 : x
  2. Step 2: Convert to fraction form
    709.97/1,064.95 = 223.06/x
  3. Step 3: Cross multiply
    709.97x = 1,064.95 × 223.06
  4. Step 4: Simplify right side
    709.97x = 237,542.14
  5. Step 5: Solve for x
    x = 237,542.14/709.97
  6. Step 6: Final answer
    x = 334.58

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Double scale
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Similar ratio
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1.5x scale

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.