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Finding the Fourth Proportional to 566.99, 782.44 and 318.30

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Solution

The fourth proportional to 566.99, 782.44 and 318.30 is: 439.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.99 : 782.44 = 318.30 : x
  2. Step 2: Convert to fraction form
    566.99/782.44 = 318.30/x
  3. Step 3: Cross multiply
    566.99x = 782.44 × 318.30
  4. Step 4: Simplify right side
    566.99x = 249,050.65
  5. Step 5: Solve for x
    x = 249,050.65/566.99
  6. Step 6: Final answer
    x = 439.25

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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.