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Finding the Fourth Proportional to 526.85, 790.29 and 321.38

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Solution

The fourth proportional to 526.85, 790.29 and 321.38 is: 482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.85 : 790.29 = 321.38 : x
  2. Step 2: Convert to fraction form
    526.85/790.29 = 321.38/x
  3. Step 3: Cross multiply
    526.85x = 790.29 × 321.38
  4. Step 4: Simplify right side
    526.85x = 253,983.40
  5. Step 5: Solve for x
    x = 253,983.40/526.85
  6. Step 6: Final answer
    x = 482.08

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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.