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Finding the Fourth Proportional to 608.20, 912.04 and 315.58

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Solution

The fourth proportional to 608.20, 912.04 and 315.58 is: 473.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.20 : 912.04 = 315.58 : x
  2. Step 2: Convert to fraction form
    608.20/912.04 = 315.58/x
  3. Step 3: Cross multiply
    608.20x = 912.04 × 315.58
  4. Step 4: Simplify right side
    608.20x = 287,821.58
  5. Step 5: Solve for x
    x = 287,821.58/608.20
  6. Step 6: Final answer
    x = 473.24

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1.5x scale

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.