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Finding the Fourth Proportional to 551.20, 762.54 and 452.76

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Solution

The fourth proportional to 551.20, 762.54 and 452.76 is: 626.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.20 : 762.54 = 452.76 : x
  2. Step 2: Convert to fraction form
    551.20/762.54 = 452.76/x
  3. Step 3: Cross multiply
    551.20x = 762.54 × 452.76
  4. Step 4: Simplify right side
    551.20x = 345,247.61
  5. Step 5: Solve for x
    x = 345,247.61/551.20
  6. Step 6: Final answer
    x = 626.36

Related Problems

Find fourth proportional to 275.60, 381.27 and 226.38
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.