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Finding the Fourth Proportional to 611.92, 918.04 and 270.16

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Solution

The fourth proportional to 611.92, 918.04 and 270.16 is: 405.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.92 : 918.04 = 270.16 : x
  2. Step 2: Convert to fraction form
    611.92/918.04 = 270.16/x
  3. Step 3: Cross multiply
    611.92x = 918.04 × 270.16
  4. Step 4: Simplify right side
    611.92x = 248,017.69
  5. Step 5: Solve for x
    x = 248,017.69/611.92
  6. Step 6: Final answer
    x = 405.31

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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.