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Finding the Fourth Proportional to 613.34, 846.80 and 473.20

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Solution

The fourth proportional to 613.34, 846.80 and 473.20 is: 653.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.34 : 846.80 = 473.20 : x
  2. Step 2: Convert to fraction form
    613.34/846.80 = 473.20/x
  3. Step 3: Cross multiply
    613.34x = 846.80 × 473.20
  4. Step 4: Simplify right side
    613.34x = 400,705.76
  5. Step 5: Solve for x
    x = 400,705.76/613.34
  6. Step 6: Final answer
    x = 653.32

Related Problems

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.