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Finding the Fourth Proportional to 566.85, 782.19 and 318.15

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Solution

The fourth proportional to 566.85, 782.19 and 318.15 is: 439.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.85 : 782.19 = 318.15 : x
  2. Step 2: Convert to fraction form
    566.85/782.19 = 318.15/x
  3. Step 3: Cross multiply
    566.85x = 782.19 × 318.15
  4. Step 4: Simplify right side
    566.85x = 248,853.75
  5. Step 5: Solve for x
    x = 248,853.75/566.85
  6. Step 6: Final answer
    x = 439.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.