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Finding the Fourth Proportional to 714.15, 986.18 and 452.25

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Solution

The fourth proportional to 714.15, 986.18 and 452.25 is: 624.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.15 : 986.18 = 452.25 : x
  2. Step 2: Convert to fraction form
    714.15/986.18 = 452.25/x
  3. Step 3: Cross multiply
    714.15x = 986.18 × 452.25
  4. Step 4: Simplify right side
    714.15x = 445,997.64
  5. Step 5: Solve for x
    x = 445,997.64/714.15
  6. Step 6: Final answer
    x = 624.52

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Double scale
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1.5x scale

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.