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Finding the Fourth Proportional to 705.23, 973.28 and 425.55

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Solution

The fourth proportional to 705.23, 973.28 and 425.55 is: 587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.23 : 973.28 = 425.55 : x
  2. Step 2: Convert to fraction form
    705.23/973.28 = 425.55/x
  3. Step 3: Cross multiply
    705.23x = 973.28 × 425.55
  4. Step 4: Simplify right side
    705.23x = 414,179.30
  5. Step 5: Solve for x
    x = 414,179.30/705.23
  6. Step 6: Final answer
    x = 587.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.