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Finding the Fourth Proportional to 476.01, 713.29 and 215.86

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Solution

The fourth proportional to 476.01, 713.29 and 215.86 is: 323.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.01 : 713.29 = 215.86 : x
  2. Step 2: Convert to fraction form
    476.01/713.29 = 215.86/x
  3. Step 3: Cross multiply
    476.01x = 713.29 × 215.86
  4. Step 4: Simplify right side
    476.01x = 153,970.78
  5. Step 5: Solve for x
    x = 153,970.78/476.01
  6. Step 6: Final answer
    x = 323.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.