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Finding the Fourth Proportional to 473.29, 710.16 and 213.47

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Solution

The fourth proportional to 473.29, 710.16 and 213.47 is: 320.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.29 : 710.16 = 213.47 : x
  2. Step 2: Convert to fraction form
    473.29/710.16 = 213.47/x
  3. Step 3: Cross multiply
    473.29x = 710.16 × 213.47
  4. Step 4: Simplify right side
    473.29x = 151,599.63
  5. Step 5: Solve for x
    x = 151,599.63/473.29
  6. Step 6: Final answer
    x = 320.31

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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.