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Finding the Fourth Proportional to 566.68, 781.96 and 317.96

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Solution

The fourth proportional to 566.68, 781.96 and 317.96 is: 438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.68 : 781.96 = 317.96 : x
  2. Step 2: Convert to fraction form
    566.68/781.96 = 317.96/x
  3. Step 3: Cross multiply
    566.68x = 781.96 × 317.96
  4. Step 4: Simplify right side
    566.68x = 248,632.00
  5. Step 5: Solve for x
    x = 248,632.00/566.68
  6. Step 6: Final answer
    x = 438.75

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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.