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Finding the Fourth Proportional to 609.45, 841.10 and 360.65

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Solution

The fourth proportional to 609.45, 841.10 and 360.65 is: 497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.45 : 841.10 = 360.65 : x
  2. Step 2: Convert to fraction form
    609.45/841.10 = 360.65/x
  3. Step 3: Cross multiply
    609.45x = 841.10 × 360.65
  4. Step 4: Simplify right side
    609.45x = 303,336.71
  5. Step 5: Solve for x
    x = 303,336.71/609.45
  6. Step 6: Final answer
    x = 497.72

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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.