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Finding the Fourth Proportional to 526.56, 792.92 and 390.58

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Solution

The fourth proportional to 526.56, 792.92 and 390.58 is: 588.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.56 : 792.92 = 390.58 : x
  2. Step 2: Convert to fraction form
    526.56/792.92 = 390.58/x
  3. Step 3: Cross multiply
    526.56x = 792.92 × 390.58
  4. Step 4: Simplify right side
    526.56x = 309,698.69
  5. Step 5: Solve for x
    x = 309,698.69/526.56
  6. Step 6: Final answer
    x = 588.15

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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.