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Finding the Fourth Proportional to 526.26, 792.45 and 390.27

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Solution

The fourth proportional to 526.26, 792.45 and 390.27 is: 587.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.26 : 792.45 = 390.27 : x
  2. Step 2: Convert to fraction form
    526.26/792.45 = 390.27/x
  3. Step 3: Cross multiply
    526.26x = 792.45 × 390.27
  4. Step 4: Simplify right side
    526.26x = 309,269.46
  5. Step 5: Solve for x
    x = 309,269.46/526.26
  6. Step 6: Final answer
    x = 587.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.