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Finding the Fourth Proportional to 613.56, 920.36 and 370.32

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Solution

The fourth proportional to 613.56, 920.36 and 370.32 is: 555.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.56 : 920.36 = 370.32 : x
  2. Step 2: Convert to fraction form
    613.56/920.36 = 370.32/x
  3. Step 3: Cross multiply
    613.56x = 920.36 × 370.32
  4. Step 4: Simplify right side
    613.56x = 340,827.72
  5. Step 5: Solve for x
    x = 340,827.72/613.56
  6. Step 6: Final answer
    x = 555.49

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.