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Finding the Fourth Proportional to 714.76, 986.16 and 452.56

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Solution

The fourth proportional to 714.76, 986.16 and 452.56 is: 624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.76 : 986.16 = 452.56 : x
  2. Step 2: Convert to fraction form
    714.76/986.16 = 452.56/x
  3. Step 3: Cross multiply
    714.76x = 986.16 × 452.56
  4. Step 4: Simplify right side
    714.76x = 446,296.57
  5. Step 5: Solve for x
    x = 446,296.57/714.76
  6. Step 6: Final answer
    x = 624.40

Related Problems

Find fourth proportional to 357.38, 493.08 and 226.28
Half scale
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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.