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Finding the Fourth Proportional to 880.05, 1,320.12 and 230.79

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Solution

The fourth proportional to 880.05, 1,320.12 and 230.79 is: 346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.05 : 1,320.12 = 230.79 : x
  2. Step 2: Convert to fraction form
    880.05/1,320.12 = 230.79/x
  3. Step 3: Cross multiply
    880.05x = 1,320.12 × 230.79
  4. Step 4: Simplify right side
    880.05x = 304,670.49
  5. Step 5: Solve for x
    x = 304,670.49/880.05
  6. Step 6: Final answer
    x = 346.20

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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.