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Finding the Fourth Proportional to 526.35, 725.37 and 378.73

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Solution

The fourth proportional to 526.35, 725.37 and 378.73 is: 521.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.35 : 725.37 = 378.73 : x
  2. Step 2: Convert to fraction form
    526.35/725.37 = 378.73/x
  3. Step 3: Cross multiply
    526.35x = 725.37 × 378.73
  4. Step 4: Simplify right side
    526.35x = 274,719.38
  5. Step 5: Solve for x
    x = 274,719.38/526.35
  6. Step 6: Final answer
    x = 521.93

Related Problems

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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.