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Finding the Fourth Proportional to 631.01, 946.58 and 220.10

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Solution

The fourth proportional to 631.01, 946.58 and 220.10 is: 330.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.01 : 946.58 = 220.10 : x
  2. Step 2: Convert to fraction form
    631.01/946.58 = 220.10/x
  3. Step 3: Cross multiply
    631.01x = 946.58 × 220.10
  4. Step 4: Simplify right side
    631.01x = 208,336.42
  5. Step 5: Solve for x
    x = 208,336.42/631.01
  6. Step 6: Final answer
    x = 330.17

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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.