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Finding the Fourth Proportional to 526.86, 790.30 and 180.21

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Solution

The fourth proportional to 526.86, 790.30 and 180.21 is: 270.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.86 : 790.30 = 180.21 : x
  2. Step 2: Convert to fraction form
    526.86/790.30 = 180.21/x
  3. Step 3: Cross multiply
    526.86x = 790.30 × 180.21
  4. Step 4: Simplify right side
    526.86x = 142,416.01
  5. Step 5: Solve for x
    x = 142,416.01/526.86
  6. Step 6: Final answer
    x = 270.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.