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Finding the Fourth Proportional to 566.15, 781.26 and 330.08

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Solution

The fourth proportional to 566.15, 781.26 and 330.08 is: 455.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.15 : 781.26 = 330.08 : x
  2. Step 2: Convert to fraction form
    566.15/781.26 = 330.08/x
  3. Step 3: Cross multiply
    566.15x = 781.26 × 330.08
  4. Step 4: Simplify right side
    566.15x = 257,874.39
  5. Step 5: Solve for x
    x = 257,874.39/566.15
  6. Step 6: Final answer
    x = 455.49

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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.