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Finding the Fourth Proportional to 665.19, 918.18 and 444.24

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Solution

The fourth proportional to 665.19, 918.18 and 444.24 is: 613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.19 : 918.18 = 444.24 : x
  2. Step 2: Convert to fraction form
    665.19/918.18 = 444.24/x
  3. Step 3: Cross multiply
    665.19x = 918.18 × 444.24
  4. Step 4: Simplify right side
    665.19x = 407,892.28
  5. Step 5: Solve for x
    x = 407,892.28/665.19
  6. Step 6: Final answer
    x = 613.20

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Double scale
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1.5x scale

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.