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Finding the Fourth Proportional to 526.80, 790.05 and 306.96

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Solution

The fourth proportional to 526.80, 790.05 and 306.96 is: 460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.80 : 790.05 = 306.96 : x
  2. Step 2: Convert to fraction form
    526.80/790.05 = 306.96/x
  3. Step 3: Cross multiply
    526.80x = 790.05 × 306.96
  4. Step 4: Simplify right side
    526.80x = 242,513.75
  5. Step 5: Solve for x
    x = 242,513.75/526.80
  6. Step 6: Final answer
    x = 460.35

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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.