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Finding the Fourth Proportional to 473.64, 652.23 and 399.66

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Solution

The fourth proportional to 473.64, 652.23 and 399.66 is: 550.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.64 : 652.23 = 399.66 : x
  2. Step 2: Convert to fraction form
    473.64/652.23 = 399.66/x
  3. Step 3: Cross multiply
    473.64x = 652.23 × 399.66
  4. Step 4: Simplify right side
    473.64x = 260,670.24
  5. Step 5: Solve for x
    x = 260,670.24/473.64
  6. Step 6: Final answer
    x = 550.36

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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.