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Finding the Fourth Proportional to 555.39, 766.58 and 378.27

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Solution

The fourth proportional to 555.39, 766.58 and 378.27 is: 522.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.39 : 766.58 = 378.27 : x
  2. Step 2: Convert to fraction form
    555.39/766.58 = 378.27/x
  3. Step 3: Cross multiply
    555.39x = 766.58 × 378.27
  4. Step 4: Simplify right side
    555.39x = 289,972.33
  5. Step 5: Solve for x
    x = 289,972.33/555.39
  6. Step 6: Final answer
    x = 522.11

Related Problems

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Half scale
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Double scale
Find fourth proportional to 556.39, 767.96 and 379.27
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.