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Finding the Fourth Proportional to 608.48, 912.24 and 243.12

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Solution

The fourth proportional to 608.48, 912.24 and 243.12 is: 364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.48 : 912.24 = 243.12 : x
  2. Step 2: Convert to fraction form
    608.48/912.24 = 243.12/x
  3. Step 3: Cross multiply
    608.48x = 912.24 × 243.12
  4. Step 4: Simplify right side
    608.48x = 221,783.79
  5. Step 5: Solve for x
    x = 221,783.79/608.48
  6. Step 6: Final answer
    x = 364.49

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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.