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Finding the Fourth Proportional to 567.72, 784.13 and 479.51

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Solution

The fourth proportional to 567.72, 784.13 and 479.51 is: 662.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.72 : 784.13 = 479.51 : x
  2. Step 2: Convert to fraction form
    567.72/784.13 = 479.51/x
  3. Step 3: Cross multiply
    567.72x = 784.13 × 479.51
  4. Step 4: Simplify right side
    567.72x = 375,991.86
  5. Step 5: Solve for x
    x = 375,991.86/567.72
  6. Step 6: Final answer
    x = 662.28

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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.