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Finding the Fourth Proportional to 473.65, 653.74 and 316.58

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Solution

The fourth proportional to 473.65, 653.74 and 316.58 is: 436.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.65 : 653.74 = 316.58 : x
  2. Step 2: Convert to fraction form
    473.65/653.74 = 316.58/x
  3. Step 3: Cross multiply
    473.65x = 653.74 × 316.58
  4. Step 4: Simplify right side
    473.65x = 206,956.95
  5. Step 5: Solve for x
    x = 206,956.95/473.65
  6. Step 6: Final answer
    x = 436.94

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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.